Speed Check
y=ax¤ +bx+c
정답 과 풀 이
http://zuaki.tistory.com
001 —6 —14 —;7!; —1.2
002 8 10 17
003 —'∂15 —'∂42 —Æ…;2¶0; —'∂2.9
004
005
006 4 -13 ;9@; —0.8
007 7 11 -2.8 -;3@;
008 5 -17 ;7$; -5.3
009 13 -8 3 4 -2
0
10
0
11
3a 2a -5a -4a0
12
7a -4a -a -10a 013
> a+2 < -a+2 40
14
> a < -a+3 3 015
< > < > <0
16
8 3 9 2 8개념
콕콕 9 10017 018 019 020-14
021 022 023 024
025 026 027 028'∂32
029'∂63 cm 030 031'∂21 032
033 034 035 036
037 038 039 040-12
041—5 042 043 044
045-4 046 047-7a 048
049 050 051 052
053 054 055 056
057 058 059 06010
06112 062 063 064
065 066 067 068
069 070 071 072
0735 12 17 20 074 075
076 077 078'∂13 079
080 081 082 083
084 085 086 087
088 089 090 091
092 093 094
11 20
유형
콕콕095 096 097 098
099
100 101 102
103 104
20105 106
107
3108 109
8110
21 22
실력
콕콕01 제곱근의 뜻과 성질
Ⅰ-1. 제곱근과 실수
116 117 118 119
120 121 122
123 124 125
-1-'2126
P -'2 Q 1+'2127 128
-1+'5129
3+'5130 131 132
133 134 135 136
137
E138
A139 140
141
25 28
유형
콕콕142 143
2144 145
146 147 148 149
150
151
AB”='5 CD”='∂10 a=-3-'5 b=1+'∂10152 153 154
a c b155
156 157
29 30
실력
콕콕111 112
113
2 '2 4+'2 4-'2 -2+'2 -2-'2114
115
< > > > < >개념
콕콕 2402 무리수와 실수
Ⅰ-1. 제곱근과 실수
a a a
6 —'6 '6
25 —5 5
46 —'∂46 '∂46
121 —11 11
xæ0 x<0
"çx¤ x -x
"√(-x)¤ x -x
-"çx¤ -x x
-"√(-x)¤ -x x
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Speed Check
247 248 249 250
251
-4252 253 254
8255 256 257 258
259 260 261 262
263 264 265 266
267 268 269 270
271 272
0273 274
275 276 277 278
279 280 281 282
1283 284 285 286
287 288 289 290
291 292 293 294
295 296
2297 298
299 300 301 302
303 304 305 306
307
(2+2'5) cm¤308 309
310
'6311 312
-1-'2313
1-'2314 315 316 317
c>a>b'7 2
46 54
유형
콕콕318 319 320 321
322 323
-5324 325
326 327
;3*;328 329
330 331
8'2 cm332
-3333
55 56
실력
콕콕165 166 167 168
169 170 171 172
173 174 175 176
75177
50178 179 180
181 182 183 184
185 186 187 188
189 190 191 192
193 194 195 196
197 198 199 200
201 202 203 204
205
8'∂21 cm¤206 207 208
;2#;209
4.854210 211
601.7212
213 214 215 216
217 218 219 220
221 222 223 224
34 41
유형
콕콕225 226 227 228
229 230 231 232
233 234 235 236
2237 238 239 240
10+4'642 43
실력
콕콕158
'∂14 4'∂30 '6 6'∂10 '∂105159
3'3 2'∂17 6'2 4'5160
'2 '5 '2 2'2161 162
163
7.570 7.675 7.681 0.7470 0.07629 75.23 773.3 741.6164
0.05477 0.1732 0.5477 17.32 54.77 173.2'∂35 7 '∂15
5 '∂10
5 '3
3
'∂13 12 '5
3 '∂11
6 '6
5
개념
콕콕 3301 근호를 포함한 식의 계산`⑴
Ⅰ-2. 근호를 포함한 식의 계산
241
5'3 4'5 '3 -2'2 2'2242
5'2 5'5 -'6 '2 5'3243
'6+'∂10 '6+2'∂15 2'3+'6 10'2-'∂10 6'2-4'6244
'3+'6 17-6'∂10245
11+6'2 7-2'∂10 -7 2 -1-'514+7'2
246
-'2-'3 '5-'3 2-'3245 '6+2 5-2'5
2('6+'3) 3
개념
콕콕 4502 근호를 포함한 식의 계산`⑵
Ⅰ-2. 근호를 포함한 식의 계산
http://zuaki.tistory.com
434
(a-4)(b-1)(b-2)435 436
437 438 439
440
(a+1)(a-1)(a¤ -3)441 442
443 444 445
2x+1446
447 448 449
-3450
451 452 453 454
455 456 457 458
459
(a+2)(b+2)460 461
462 463 464
(a-b)(a+b-2c)465 466 467 468
469
2x-2470 471 472
473
(a+2b+5)(-a-2b+5)474
73 80
유형
콕콕334
x¤ +4x-5 2x¤ +x-1 x¤ +x-6 x¤ -2x-8335
2a x 2x xy336
3a(x-y) 2xy(x+3y) 5x(x+4)x(a+b-cx)
337
2a(x+2y) 2b(ab-3)338
(x+7)¤ (2x-1)¤ (x+8)¤ (5x-2)¤339
81 —18 100 —20340
(x+3)(x-3) (3x+4)(3x-4)340 (5a+2)(5a-2) {x+;6!;} {x-;6!;}
341
{x-;2#;}¤{x+;8!;} {x-;8!;}
342
1 4 1 5 4 -1 5 -1343
4 4x 6x 4 5 5x 7x 5344
(x+2)(x+6) (x+4)(x+5)(x+4)(x+6) (x-4)(x-5) (x+2)(x-12) (x-4)(x-7)
345
-1 -x 2x 1 -1 -x 3x 1-1 -5x -1 -x -6x 1 1 -1 -6x -1 -x -7x 1 1
346
(2x+1)(x+3) (x+2)(3x-1) (2x-3)(3x+1) (x-3)(2x+5) (2x-3)(2x+1) (2x+5)(x-3)59 60
개념
콕콕347 348 349
350
(a+5)(b-3)351 352
353
(3a-4b)¤354 355
356
a=2 b=3357
1358
359 360 361
—;1¢5;362
4363
5364
1365 366
367
3368
4369
6370
371 372 373
374
a=-1 b=7 c=6375 376
377 378 379
-10380
381 382
3383 384
385
-3386 387
5388
389 390 391 392
0393 394 395 396
397 398 399
5400
401 402 403 404
405 406 407 408
x+2409 410
2x+3411
61 68
유형
콕콕412 413
1414 415
7416 417 418 419
420 421 422 423
13424 425
x¤ -x-20 (x-5)(x+4)426 427
69 70
실력
콕콕01 다항식의 인수분해
Ⅱ-1. 인수분해
428
a(x-3)¤ a(x+4y)(x-4y)428 2b(x+1)(x-4) 2b(3x+1)(x-2)
429
(x+y+2)¤ (4x+3y)(2x-y)(x-y+4)(x-y-2) (x-3y+3)(x-3y-2)
430
(a+1)(b+1) (a+1)(b-2)(x+1)(y+2) (x+1)(y-3)
431
(x+y+7)(x-y+7) (x+y-4)(x-y-4) (a+b+2)(a-b+2) (a+b-3)(a-b-3)432
30 7900 400 900 9002500 3200 1400 4400 4000
433
400 1600 10000 900 25003600 5400 1600 4'3 1
개념
콕콕 7202 여러 가지 인수분해
Ⅱ-1. 인수분해
http://zuaki.tistory.com
Speed Check
475 476 477 478
479 480 481 482
483 484 485
4'5486
487 488 489 490
491 492 493
0494
495
x-1496
3x+2497
528 529 530
a=-1 b=-4531 532 533
x=-1534
535 536 537 538
4539 540 541 542
543
12544
7545 546
547
x=-3548 549 550
551 552 553
6554
555 556
x=;3!;557 558
559 560
2561 562
563
x=-4564 565 566
567 568
3569 570
571 572 573
-9 11574
575 576
4577 578
579 580 581
aæ2582
583 584 585
586
A=36 B=6 C=35587
A=1 B=1 C=;2#; D=6588
15589
-3590
87 94
유형
콕콕591 592 593 594
14595 596
-;2!; 4597 598
599
-7600 601 602
603
1604 605 606
-895 96
실력
콕콕498 499 500
-6501
-8502 503 504 505
506
2x507 508 509
510
-96511
-1512 513
4x+181 82
실력
콕콕514
515
0 2516
517
x=-1 x=3 x=1 x=2518
x=1 x=4 x=-5 x=-2 518 x=-;3@; x=;2!; x=-;3$; x=;3!;519
x=-8 x=8 x=0 x=-7518 x=2 x=3 x=-;3!; x=3
520
6 6521
x=-4 x=5518 x=;3!; x=-;2%;
522
4 4 -6 9 2 14 2 16523
x=—'∂10 x=—2'3518 x=—'3 x=—
524
x=-1—'3 x=2—'7518 x=1— x=-2—'2
525
5 1 6 1 6 1 1 4 5 2 5526
(x+1)¤ =5 (x+2)¤ =7 518 (x-1)¤ =2 (x+3)¤ =12527
x=2—'6 x=-3—2'5518 x=1—'3 x=-2—2'6 3 '∂10
2
'∂15 3
85 86
개념
콕콕01 이차방정식의 풀이`⑴
Ⅱ-2. 이차방정식
607
x= x=607 x= x=
608
x=1—'7 x=-1—'2607 x= x=
609
x=-;4!; x=1 x=607 x= x=-1 x=1
610
2 1 2 0-2—'6 2
5—'∂29 2 4—'∂10
3 -2—'∂10
2
-5—'∂13 6 1—'∂33
4
3—'∂21 2 -1—'∂21
2
개념
콕콕 9802 이차방정식의 풀이`⑵
Ⅱ-2. 이차방정식
http://zuaki.tistory.com
611
-1 5 2 -7 -;2!; -;2#; ;3@; 2612
1 -;2#; 13 -;;¡2£;;613
x¤ -6x+5=0 -2x¤ -14x-20=0 2x¤ -4x-2=0 3x¤ +12x+3=0752
753
y=700x y=3x y=;6!;px¤753 y=;3$;px‹ y=x¤ +4x
754
-1 -1 2 -12755
756
(0 0) x=0 y=-x¤757
758
(0 0) x=0 y=;2#;x¤759 760
121 122
개념
콕콕698 699
6700 701
702 703
6704 705
706
2707
11708 709
710 711 712 713
714 715 716 717
718 719 720 721
722
6 cm723 724 725
8 cm726
2727 728
8 m729
730 731
2 m732 733
2734
2 cm735
13 cm736
3 m695
(x+2) x¤ +2x-48=0x=-8 x=6 6 14
696
10 24 4 4 4697
(x-4) m (x+5) mx¤ +x-132=0 x=-12 x=11 11 m
111 116
유형
콕콕737 738 739 740
8741 742
41743
20744
745 746 747
18 cm¤748
4 cm749 750 751
19 cm117 118
실력
콕콕614
38615 616 617
1618 619 620
621
x=-1—'5622
x=623 624
92625 626
-2627
x=628 629
630 631 632
1633
634 635
x=3636
5637 638 639
5640
641 642 643 644
645
1646 647 648
649 650 651 652
653 654 655 656
-;3$;657 658
-;;£3¡;;659 660
661 662
;2%;663 664
665
;;™4¶;;666 667
12668
669 670 671
6672
-34673 674 675 676
4677
-1—'3 2
1—'∂11 10 2'∂10
3
99 106
유형
콕콕678 679 680
x=-;4!; x=1681
64682 683
5684
685 686
k<;4!;687 688
689 690 691
-10 10692 693
107 108
실력
콕콕01 이차함수 y=ax¤ 의 그래프
Ⅲ-1. 이차함수와 그 그래프
694
x+1 x¤ +x-90=0 x=-10 x=9 9 10개념
콕콕 11003 이차방정식의 활용
Ⅱ-2. 이차방정식
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Speed Check
761
yæ0 x>0762
y y…0 x>0O 2 x
-6 -4 -2 -2
-4 4
y
O 2 x
2 4 6
-2
-4 4
819 820
y=-(x-4)¤821
4822 823 824
y=2(x+1)¤ -2825
-2826 827
(2 3) x=2828
-5829 830 831
-9832
-16833 834 835
836 837 838 839
840 841 842
843
y=2(x+2)¤ -5844
6845
1846
-2847 848
y=-3(x+3)¤ +8849 850 851 852
(0 8)132 136
유형
콕콕763 764 765
766 767
9768 769
770 771 772 773
-6774
-;3!;775 776 777
778 779 780 781
782 783 784 785
786 787
-4788 789
790
y=-;2#;x¤123 126
유형
콕콕791 792 793 794
795
-4796 797
;4#;798 799
a<-;3!;800 801 802 803
y=18x¤804
2127 128
실력
콕콕805
y=3x¤ +2 y=-;3$;x¤ -;2!;806
yO 2 x
2 -2
-2 -4 -6
-4 4
y
O 2 x
2 4 6
-2 -2
-4 4
807
{0 -;2!;} x=0 {0 ;5!;} x=0808
y=3(x+2)¤ y=;2!;(x-3)¤809
810
(-3 0) x=-3 {;2!; 0} x=;2!;811
y=2(x-3)¤ +4 y=-(x-1)¤ -2812
813
(1 4) x=1 (-2 -3) x=-2814
y=2(x-2)¤ -2 y=-(x+4)¤ +5 y=4(x+2)¤ +3815
2 1 4 1 -;2!; -;2!; 2 1816
1 4 2 4 2 1 4817
a>0 p<0 q>0 a<0 p<0 q<0818
y=-2(x+1)¤ +6 y=-3(x+4)¤ +2 yO 2 x
2 4 6
-2
-4 4
y
O 2 x
-2 -2 -4 -6
-4 4
y
O x
2 2
-2 -2 -4 -6
-4 4
y
O 2 x
2 4 6
-2 -2
-4 4
130 131
개념
콕콕02 이차함수 y=a(x-p)¤ +q의 그래프
Ⅲ-1. 이차함수와 그 그래프
853
5854
-4855 856
857
(0 3)858 859 860
861 862
y=-3(x-2)¤863
864
-;4!;865 866 867
(2 4)137 138
실력
콕콕http://zuaki.tistory.com
868
4 4 2 2869
y=(x+1)¤ -4 (-1 -4) x=-1869 y=-(x-2)¤ +7 (2 7) x=2
869 y=;2!;(x-3)¤ -;;™2¡;; {3 -;;™2¡;;} x=3
870
871
0 0 0 6 6 6872
x (-1 0) (1 0) y (0 -3)x (-3 0) (1 0) y (0 6)
873
> > > <874
a>0 b<0 c>0 a<0 b>0 c<0875
1 1 3 7 4 1 2 2 1 1 2 4 1876
1 -2 -2 -2 1 1 4 1 1 -3 1 3 2 2877
0 -2 c -1 7 a-b-2 9 1 5 a+b-2 7 8 -1 8x¤ -x-2878
2 2 0 8 -4 -2 -2 2 -2x¤ +8879
y=-2x¤ +4x+1 y=-2x¤ -8x-5879 y=;3!;x¤ +;3@;x-1 y=x¤ -2x-3 y
O 2 x
-6 -4 -2 -2
-4 4
y
O 2 x
2 4
6
-2
-4 4
141 142
개념
콕콕01 이차함수 y=ax¤ +bx+c의 그래프
Ⅲ-2. 이차함수 y=ax¤ +bx+c의 그래프와 활용
935
-3 x=0 0 x=1935 5 x=-;3$;
936
-10 x=3 3 x=2-5 x=-2
937
-2 -12 2 12 12 2 2 2 12 2 8 4938
3 3 3 3939
12-x 12-x 12 6 36 6 6 36940
y=-x¤ +14x 49 cm¤ 7 cm개념
콕콕 15202 이차함수의 활용
Ⅲ-2. 이차함수 y=ax¤ +bx+c의 그래프와 활용
941 942 943 944
945 946 947
-;;™2∞;;948
949 950 951 952
953 954 955 956
957 958 959
y=2x¤ +12x+24960 961 962
;1¡2;963
7 7964
-10 10965 966 967
968 969 970
4971
2972 973 974 975
72p`cm¤976
;;™4¶;;977
{;2%; 5}978
5979
65 m980
4 8981
153 158
유형
콕콕880 881 882
{-3 -;;¡2∞;;} x=-3883 884
-9885 886
887 888 889
5890
(4 -3)891 892 893 894
895 896 897
1898
899 900
1 2 3901
-3<k<0902 903
904
24905 906 907
908 909 910
2911
912 913
25914
2915
916 917 918
-5919
x=;2!;143 148
유형
콕콕982 983 984
9985
-2986 987 988
5989
990 991 992 993
169 cm¤994
128 cm¤995 996
200 cm¤997
159 160
실력
콕콕920 921 922
-4923
924 925 926 927
6928 929
35930 931
932
-2933 934
149 150
실력
콕콕http://zuaki.tistory.com
01 제곱근의 뜻과 성질
Ⅰ-1. 제곱근과 실수 008
5 -17 ;7$; -5.3
009
=8+5=13
=3-11=-8
="ç9¤ -"ç6¤ =9-6=3
=;3@;_6=4
=-"ç8¤ ÷4=-8÷4=-2
13 -8 3 4 -2
010
011 3a>0
"√(3a)¤ =3a -2a<0
"√(-2a)¤ =-(-2a)=2a 5a<0
"√(5a)¤ =-5a -4a>0
"√(-4a)¤ =-4a
3a 2a -5a -4a
012
5a>0 -2a<0
"√(5a)¤ +"√(-2a)¤ =5a-(-2a)
=7a 3a>0 -7a<0
"√(3a)¤ -"√(-7a)¤ =3a-{-(-7a)}
=-4a 3a<0 2a<0
"√(3a)¤ -"√(2a)¤ =-3a-(-2a)
=-a 6a<0 -4a>0
"√(6a)¤ +"√(-4a)¤ =-6a-4a
=-10a
7a -4a -a -10a
xæ0 x<0
"çx¤ x -x
"√(-x)¤ x -x
-"çx¤ -x x
-"√(-x)¤ -x x
001
(+6)¤ =(-6)¤ =36 —6 (+14)¤ =(-14)¤ =196 —14 {+;7!;}¤ ={-;7!;}¤ =;4¡9; —;7!;
(+1.2)¤ =(-1.2)¤ =1.44 —1.2
—6 —14 —;7!; —1.2
002
8 10 17
003
—'∂15 —'∂42 —Æ…;2¶0; —'∂2.9
004
005
8 —'8
15 —'∂15 15 '∂15
'∂81=9 —3 -3
006
'∂16="ç4¤ =4
-'∂169=-"ç13¤ =-13 Æ…;8¢1; =æ≠{;9@;}¤ =;9@;
—'∂0.64=—"ç0.8¤ =—0.8
4 -13 ;9@; —0.8
007
7 11 -2.8 -;3@;
개념
콕콕 9 10a a a
6 —'6 '6
25 —5 5
46 —'∂46 '∂46
121 —11 11
http://zuaki.tistory.com
0
13
a-2<0"√(a-2)¤ =-(a-2)=-a+2
"√(a+2)¤ +"√(a-2)¤ =a+2-a+2=4
> a+2 < -a+2 4
0
14
a-3<0"√(a-3)¤ =-(a-3)=-a+3
"ça¤ +"√(a-3)¤ =a-a+3=3
> a < -a+3 3
0
15
12<15 '∂12<'∂15 3='9 '∂13>3
-4=-'∂16 -'∂17<-4
"√(-3)¤ ='9 "√(-3)¤ >'8 Æ;4!; >Æ;5!; -Æ;4!;<-Æ;5!;
< > < > <
0
16
'ßx…'8 x…8
x 1 2 3 y 8 8
'ßx<2 'ßx<'4 x<4
x 1 2 3 3
-'ßxæ-3 'ßx…3 'ßx…'9 x…9
x 1 2 3 y 9 9
1<'ßx<2 '1<'ßx<'4 1<x<4
x 2 3 2
3…'ƒx+3…4 '9…'ƒx+3…'∂16
9…x+3…16 6…x…13
x 6 7 8 y 13 8
8 3 9 2 8
017 018 019 020-14
021 022 023 024
025 026 027 028'∂32
029'∂63 cm 030 031'∂21 032
유형
콕콕 11 20033 034 035 036
037 038 039 040-12
041—5 042 043 044
045-4 046 047-7a 048
049 050 051 052
053 054 055 056
057 058 059 06010
06112 062 063 064
065 066 067 068
069 070 071 072
0735 12 17 20 074 075
076 077 078'∂13 079
080 081 082 083
084 085 086 087
088 089 090 091
092 093 094
017
-9 -9
018
x 15 x¤ =15
019
-36 -7¤ 2
020
25 —5 81 —9 a+b
14 -4 4 -14 -14
-14
021
'∂81=9 —3
022
7 —'7 7 '7
023
0 1 2
024
(-8)¤ =64 64 —8 a=-8
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'∂16=4 4 —2 b=2 a÷b=(-8)÷2=-4
0
25
5¤ =25 25 —5
0
26
0.09 —0.3
'∂16=4 4 —2
0
27
1.H7= =;;¡9§;;
;;¡9§;; —;3$;
0
28
=6¤ -2¤ =32 x
=x¤
x¤ =32
x>0 x='∂32
'∂32 '∂32
0
29
=7_9=63(cm¤ ) x cm x¤ =63
x>0 x='∂63
'∂63 cm '∂63 cm
0
30
=;2!;_6_2=6 x x¤ =6
x>0 x='6
'6
0
31
=;2!;_6_5+;2!;_4_3=21 x
x¤ =21
x>0 x='∂21
'∂21 '∂21
17-1 9
032
Æ…;4@9%; =;7%;
033
'∂100=10 'ƒ0.36=0.6 Æ;9!;=;3!;
'∂64=8
034
1.6 —'∂1.6
;3¡6; —Æ…;3¡6;=—;6!;
27 —'∂27
;8$1(; —Æ…;8$1(;=—;9&;
0.H1 —ø∑0.H1=—Æ;9!;=—;3!;
;3¡6; ;8$1(; 0.H1 3
035
—Æ…;1∞6; —;9%; —'∂0.9
—'∂20 —'ƒ5000
036
-('∂15)¤ =-15 -"√(-12)¤ =-12
037
"ç3¤ ="√(-3)¤ ='9=('3 )¤ =3 -"√(-3)¤ =-3
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0
38
'∂64="ç8¤ =8 -'∂49=-"ç7¤ =-7 -"√(-5)¤ =-5
0
39
3 7 -2 -8 10
0
40
"√(-9)¤ =9 9 a=-3
(-'∂16)¤ =16 16 b=4
ab=-12 -12
0
41
(-'∂25)¤ =25 25 —5 —5
0
42
('6)¤ =6 6 a='6
(-'9)¤ =9 9 b=-3
= =-2
0
43
"√(-5)¤ +(-'7 )¤ -"ç8¤ =5+7-8=4
0
44
æ≠{;8(;}¤ _'∂64=æ≠{;8(;}¤ _"ç8¤ =;8(;_8=9
0
45
A=Æ…;4#9^;_(-'7)¤ =æ≠{;7^;}¤ _7=;7^;_7=6 B='∂16÷æ≠{-;5@;}¤ ="ç4¤ ÷;5@;=4_;2%;=10
A-B=6-10=-4 -4
0
46
a<0"ça¤ =-a -2a>0
"√(-2a)¤ =-2a
;3A;<0
æ≠ =æ≠{;3A;}¤ =-;3A;
a¤
9 ('6)¤
-3 a¤
b
6a<0
"√36a¤ ="√(6a)¤ =-6a 5a<0
-"√(5a)¤ =-(-5a)=5a
047
a<0 7a<0
"√(7a)¤ =-7a -7a
048 a>0 ('a)¤ =a a>0 -"ça¤ =-a a>0 (-'a)¤ =a -a<0
-"√(-a)¤ =-{-(-a)}=-a -a<0
"√(-a)¤ =-(-a)=a 049
"ça¤ =-a 3a>0
-"√(3a)¤ =-3a -5a<0
"√(-5a)¤ =-(-5a)=5a 4a<0
-"√16a¤ =-"√(4a)¤ =-(-4a)=4a 2
050
-4a>0 a<0
"√(-4a)¤ -"ça¤ =-4a-(-a)
=-4a+a=-3a
051
-2a<0 3a>0
"√(-2a)¤ -"√(3a)¤ =-(-2a)-3a
=2a-3a=-a
052
5a<0 7a<0
"√25a¤ +"√49a¤ ="√(5a)¤ +"√(7a)¤
=-5a-7a
=-12a
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0
53
-2a>0 -3b<0
"√(-2a)¤ -"√(-3b)¤ =-2a-{-(-3b)}
=-2a-3b
0
54
-2<a<3 a-3<0 a+2>0
"√(a-3)¤ -"√(a+2)¤
=-(a-3)-(a+2)
=-a+3-a-2
=-2a+1
0
55
0<a<4 a>0 a-4<0
"ça¤ -"√(a-4)¤ =a-{-(a-4)}=a+a-4=2a-4
=2 =-4
+ =-2
0
56
3<a<b a-3>0 a-b<0
"√(a-3)¤ +"√(a-b)¤
=a-3-(a-b)
=a-3-a+b
=b-3
0
57
-1<a<4 a-4<0 a+1>0
"√(a-4)¤ +2"√(a+1)¤
=-(a-4)+2(a+1)
=-a+4+2a+2
=a+6
0
58
'∂28x="√2¤ _7_x x=7_ ¤
x=7
0
59
'∂20x="√2¤ _5_x x=5_ ¤
5 5_2¤ 5¤
5_3¤ 5_5¤
x
0
60
'∂90x="√2_5_3¤ _x
x 10 10
061
'∂12n="√2¤ _3_n n=3_ ¤
n 3 3_2¤ =12 3_3¤ =27 y
12 12
062
'∂18a="√2_3¤ _a a=2_ ¤
a=2 a=2 '∂18a='∂36=6=b
a+b=8
a b a+b
063
Æ… =æ≠ x
5
064
Æ… =æ≠ x
x=7
065
;;¢a•;; Æ…;;¢a•;;
Æ…;;¢a•;;=æ≠
a 3
066
32 36 49 64 y
x
32+x=36 x=4
067
'ƒ15+1='∂16=4 'ƒ15+10='∂25=5 'ƒ15+21='∂36=6 'ƒ15+25='∂40 'ƒ15+34='∂49=7
2› _3 a 3¤ _7
x 63
x
3¤ _5 x 45
x
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0
68
'ƒ45+x 45+x
7¤ =49 8¤ =64 9¤ =81
x 4 19 36
4+19+36=59
0
69
'ƒ20+x 20+x 20
25 36 49 64 y 20+x=25 x=5 20+x=36 x=16 20+x=49 x=29 20+x=64 x=44
x 30 5 16 29 3
0
70
'ƒ32-x 32-x 32
32-x 1 4 9 16 25 x 31 28 23 16 7 M=31 m=7
M-m=31-7=24
0
71
'ƒ38-2='∂36=6 'ƒ38-13='∂25=5 'ƒ38-20='∂18 'ƒ38-22='∂16=4 'ƒ38-29='9=3 0
72
'ƒ30-x 30-x 30
30-x=25 x=5
0
73
'ƒ21-x 21-x 21
21-x 1 4 9 16 x 20 17 12 5
5 12 17 20
0
74
'ƒ10-x 10-x 0 10
10-x 0 1 4 9 x=10 9 6 1 x
10+9+6+1=26
075
'ƒ45-x 45-x 0 45
45-x 0 1 4 9 16 25 36 x 45 44 41 36 29 20 9
M=45 m=9 M+m=54
076
-2=-'4 -'3>-2 -4=-'∂16 -'∂12>-4 5='∂25 5<'∂28
4='∂16 4>'∂15
-;2!;=-Æ;4!; -Æ;3!;<-;2!;
077
-2=-'4 -3=-'9
-'∂12<-3<-'8<-'7<-2
078
1='1 -2=-'4 4='∂16 -'∂10<-2<1<'∂13<4<'∂23
'∂13 '∂13
079
3-'7>0 ø∑(3-'7 )¤ =3-'7
2-'7<0 ø∑(2-'7 )¤ =-(2-'7 )=-2+'7 ø∑(3-'7 )¤ +ø∑(2-'7 )¤ =3-'7-2+'7=1
080 2-'5<0
ø∑(2-'5 )¤ =-(2-'5 )=-2+'5
081
2-'2>0 '2-2<0
ø∑(2-'2 )¤ -ø∑('2-2)¤ =2-'2-{-('2-2)}
=2-'2+'2-2
=0
082
x+y=4+1+'∂10=5+'∂10>0
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x-y=4-(1+'∂10)=3-'∂10='9-'∂10<0
"√(x+y)¤ -"√(x-y)¤ ="√(5+'∂10)¤ -"√(3-'∂10)¤
=5+'∂10-{-(3-'∂10)}
=5+'∂10+3-'∂10=8
0
83
1…'ƒ2x-1<3 '1…'ƒ2x-1<'9 1…2x-1<9 2…2x<10
1…x<5
x 1 2 3 4 1+2+3+4=10
0
84
3…'ßx<5 '9…'ßx<'∂25 9…x<25
x
0
85
2<'ßx<3 '4<'ßx<'9 4<x<9
x 5 6 7 8 4
0
86
1…'ƒx-2…2 '1…'ƒx-2…'4 1…x-2…4 3…x…6
x 3 4 5 6 4
0
87
-8<-'∂5x…-6 6…'∂5x<8 '∂36…'∂5x<'∂64 36…5x<64
;;£5§;;…x<;;§5¢;;
x 8 9 10 11 12 5
0
88
'∂15<x<'∂20 '∂15<"çx¤ <'∂20 15<x¤ <20
x 4
0
89
1…Æ;2A;<3 '1…Æ;2A; <'9 1…;2A;<9 2…a<18
a 2 3 4 y 17 16
090
18a '∂18a
8 12
8<'∂18a<12
'∂64<'∂18a<'∂144 64<18a<144
;;£9™;; <a<8
a 4 5 6 7
091
6<'∂45<7 N(45)=6 4<'∂21<5 N(21)=4 N(45)-N(21)=6-4=2
092
3<'∂12<4 x=3 5<'∂32<6 y=5
y-x=5-3=2
093
2<'8<3 '8 a=2
7<'∂50<8 '∂50 b=7
a+b=9
094
f(x)=3 3<'ßx…4 '9<'ßx…'∂16
9<x…16
x 10 11 12 13 14 15 16 7
095 096 097 098
099
100 101 102
103 104
20105 106
107
3108 109
8110
실력
콕콕095
64 a=8
'∂81=9 b=-3
a-b=8-(-3)=11
21 22
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0
96
25 '∂25=5
9 -'9=-3
0
97
"ça¤ =4='∂16 a¤ =16
a 16 a=-4 a=4
0
98
'5 m '∂11 m 5 m¤
11 m¤ 5+11=16(m¤ )
'∂16=4 m 0
99
—'8 —Æ;3!; —'∂15
—0.1 —Æ;4&;
100
5 8 -10 9 13
101
(-'7)¤ -'∂36-"√(-14)¤ =7-6-14=-13
102
6a<0 8a<0
"√36a¤ +"√64a¤ ="√(6a)¤ +"√(8a)¤
=-6a-8a=-14a
103
a-b<0 a<b ab<0 a<0 b>0 b-a>0 2a<0
(-'b)¤ -"√(b-a)¤ +"√4a¤ =(-'b)¤ -"√(b-a)¤ +"√(2a)¤
=b-(b-a)-2a
=b-b+a-2a=-a
104
'ƒ29-x '∂20x
'ƒ29-x 29-x 29
29-x 1 4 9 16 25 x 28 25 20 13 4
'∂20x="√2¤ _5_x x=5_ ¤
x=5 20(=5_2¤ ) 45(=5_3¤ ) y
x 20
20
105
17<18 '∂17<'∂18 '2<'3 -'2>-'3
;3@;<;4#; Æ;3@; <Æ;4#;
'∂36<'∂37 6<'∂37 Æ;2!; >Æ;9!; Æ;2!; >;3!;
106
a=;4!;'a=;2!; ;a!;=4 a=;4!; a¤ =;1¡6; Æ;a!;=2 a¤
107
'∂16>'3 4>'3 4-'3>0 '3>'1 '3>1 1-'3<0
ø∑(4-'3 )¤ +ø∑(1-'3 )¤ =(4-'3 )-(1-'3 )=3 3
108
'5<x<'∂28 '5<"çx¤ <'∂28 5<x¤ <28 x 3 4 5
a=5 b=3 a+b=8
109
4…'ƒ2x+5<5 '∂16…'ƒ2x+5<'∂25 16…2x+5<25 11…2x<20
5.5…x<10
단계 채점요소 비율
10 40 40 10
'ƒ29-x x
'∂20x x
x
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116
'∂25=5 2.H7= =;;™9∞;;
Æ…;4!9^; =æ≠{;7$;}¤
=;7$;
'∂40 -'7 Æ;9@; 3 27-2
9
116 117 118 119
120 121 122
123 124 125
-1-'2126
P -'2 Q 1+'2127 128
-1+'5129
3+'5130 131 132
133 134 135 136
137
E138
A139 140
141
유형
콕콕 25 28x 6 7 8 9 a=4
'ƒ32+x 32+x 32
32+x 36 49 64 y x 4 17 32 y
4 b=4
a+b=4+4=8
8
110
f(1)=0f(2)=f(3)=f(4)=1
f(5)=f(6)=f(7)=f(8)=f(9)=2 f(10)=3
f(1)+f(2)+f(3)+y+f(10)=3_1+5_2+3
=16
113
ABCD =2¤ -4_{;2!;_1_1}=2
AB” '2
2 '2 4+'2 4-'2 -2+'2 -2-'2
114
1 22 3 ;2%; 2.1 y
'6 '8 '6+0.01 '8-0.01 y
'3 2 1.8 1.9 y
115
'5<'6 '5+3<3+'6 '∂15>'∂13 '∂15-7>'∂13-7 3+'5-5='5-2='5-'4>0
3+'5>5
7-('∂14+3)=4-'∂14='∂16-'∂14>0 7>'∂14+3
'∂15-3-2='∂15-5='∂15-'∂25<0 '∂15-3<2
2-'∂24-(-3)=5-'∂24='∂25-'∂24>0 2-'∂24>-3
< > > > < >
02 무리수와 실수
Ⅰ-1. 제곱근과 실수
111
-'∂81=-"ç9¤ =-9 p 3.141592y
"√(-3.5)¤ =3.5
112
개념
콕콕 24단계 채점요소 비율
40 40 20 a
b a+b
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117
'∂16="ç4¤ =4
118
'∂64=8
'∂0.09="√0.3¤ =0.3
0.H3=;9#;=;3!;
119
—'3 —2 —3 —4 —5
120
'4=2121
'7122
'4=2
124
'∂36=6
125
ABCD =2¤ -4_{;2!;_1_1}=2
AD”='2 P -1-'2
-1-'2
126
1 '2
AC”='2 P -'2
FH”='2 Q 1+'2
P -'2 Q 1+'2
127
AC”=AQ” BD”=BP” AQ”='2 BP”='2
P -'2 B 0
A -1
Q -1+'2
128
ABCD =3¤ -4_{;2!;_1_2}=5
AB”='5 P -1+'5
-1+'5
129
ABCD =3¤ -4_{;2!;_1_2}=5 AB”='5
Q 3-'5 A 3
P 3+'5 3+'5
130
AB” x P -2+x
-2+x=-2+'∂13 x='∂13 ABCD
('∂13)¤ =13
131
132
133
'2<'3 '2+1<'3+1
6-(3+'∂12)=3-'∂12='9-'∂12<0 6<3+'∂12
'5>'3 '5-2>'3-2 4-'8-1=3-'8='9-'8>0
4-'8>1
7-('∂22+2)=5-'∂22='∂25-'∂22>0 7>'∂22+2
134
5-('7+3)=2-'7='4-'7<0 5<'7+3
-3<-'7 -'∂11-3<-11-'7 3-'∂15-(-1)=4-'∂15='∂16-'∂15>0
3-'∂15>-1
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142 143
2144 145
146 147 148 149
150
151
AB”='5 CD”='∂10 a=-3-'5 b=1+'∂10152 153 154
a c b155
156 157
실력
콕콕142
'4=2 2.H5=;;™9£;;
Æ;9!;=;3!; '∂49=7
143
'∂1.21=1.1 Æ…;1¡6; =;4!; '∂144=12
'∂0.9 '8 2 2
144
'3145
(-'3)¤ =3 {-(-'3)}¤ =3
-'3+'3=0 -3_(-'3)=3'3
'3_(-'3 )=-3
146
'a a 20 1 4 9 16
19-4=15
147
'3+(-'3 )=0 '4=2
29 30 -2-'∂19-(-6)=4-'∂19='∂16-'∂19<0
-2-'∂19<-6
'6<'∂12 '6-5<'∂12-5
135
2>'32+'5>'3+'5 a>b '5>2
'3+'5>'3+2 b>c c<b<a
136
1<'3<2 2<1+'3<3 1+'3 C
1<'2<2 '2 B 1<'3<2 0<-1+'3<1
-1+'3 A
137
4<'∂21<5 '∂21 E E
138
3<'∂15<4 -4<-'∂15<-3
-'∂15 A A
139
'2+0.1=1.514y '3-0.01=1.722y
'3-0.4=1.332y '2 '3
'2 '3 '2 '3
'2+0.2=1.614y
140
'2=1.414y -1 '2
1 1 0 1 2
141
'5+1=3.236y '6-'5=0.213y
'2+'3 2
'6+'5=4.685y
'5 '6 '5 '6
'6-1=1.449y '5+'6
2
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148
Æ…;2ª5;=;5#;
149
ABCD =2¤ -4_{;2!;_1_1}=2
BC” '2 P 1-'2
a=1 b=2 a+b=3
150
ABCD 1 BD”='2
B b P b-'2
b=3
A 2 Q
2+'2
151
AB”=3¤ -4_{;2!;_1_2}=5 CD”
=4¤ -4_{;2!;_3_1}=10 AB”='5 CD”='∂10
P -3-'5
a=-3-'5
Q 1+'∂10
b=1+'∂10
AB”='5 CD”='∂10 a=-3-'5 b=1+'∂10
152
-3<-'5<-2 3<'∂12<4 -'5 '∂12 -2 -1 0 1 2 3 6
3<'∂11<4 3<'∂15<4 '∂11 '∂15
153
('5+1)-5='5-4='5-'∂16<0
5-('2+3)=2-'2='4-'2>0 '6-5-('7-5)='6-'7<0
(-3+'7)-('7-'∂10)=-3+'∂10=-'9+'∂10>0 2+'5-('3+'5)=2-'3='4-'3>0
154
a-b=5-'∂10-1=4-'∂10='∂16-'∂10>0 a>b
b-c=1-(-'∂12+5)='∂12-4='∂12-'∂16<0 b<c
a-c=5-'∂10-(-'∂12+5)=-'∂10+'∂12>0 a>c
a c b
a c b
155
3<'∂10<4 0<-3+'∂10<1
-3+'∂10 0 1 D
156
'5 3 '5 3
'5+0.2=2.436y
= =1.618y
'5<'8<3 '8 '5 3 3-'5=0.763y
'5 3 '5+0.2 '8 3
157
-2<-'3<-1 -1<1-'3<0 1<'3<2 3<2+'3<4
1-'3 2+'3 0 1 2 3 4
3+'5 2 3.236y
2 1+'5
2 3+'5
2
단계 채점요소 비율
30 30 30 10 a b
b c a c
단계 채점요소 비율
40 30 30 AB” CD”
a b
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01 근호를 포함한 식의 계산 ⑴
Ⅰ-2. 근호를 포함한 식의 계산
165 166 167 168
169 170 171 172
173 174 175 176
75177
50178 179 180
181 182 183 184
185 186 187 188
189 190 191 192
193 194 195 196
197 198 199 200
201 202 203 204
205
8'∂21 cm¤206 207
208
;2#;209
4.854210 211
601.7212 213 214 215
216 217 218 219
220 221 222 223
224
유형
콕콕 34 41158
'2_'7='ƒ2_7='∂14 4'3_'∂10=4'ƒ3_10=4'∂30 Æ;5#;_'∂10=Æ…;5#;_10='6 2'2_3'5=2_3'ƒ2_5=6'∂10 '3_'5_'7='ƒ3_5_7='∂105
'∂14 4'∂30 '6 6'∂10 '∂105
159
'∂27="√3¤ _3=3'3 '∂68="√2¤ _17=2'∂17 '∂72="√6¤ _2=6'2 '∂80="√4¤ _5=4'5
3'3 2'∂17 6'2 4'5
160
=Æ;3^;='2
=Æ…:¡2º:='5
'∂22÷'∂11= =Æ…;1@1@;='2 8'∂12÷4'6= =;4*;Æ…;;¡6™;;=2'2
'2 '5 '2 2'2
161
Æ…;2§5; =Æ… = Æ…;3!6!; =Æ… = Æ;9%; =Æ… = Æ…;1¡4£4; =Æ… =
162
= =
= = =
= = '∂15 5 '3_'5 '5_'5 '3
'5
'∂10 5 2'∂10
10 2_'∂10
'∂10_'∂10 2
'∂10
'3 3 1_'3 '3_'3 1
'3
'∂13 12 '5
3 '∂11
6 '6
5 '∂13
12 13 12¤
'5 3 5 3¤
'∂11 6 11 6¤
'6 5 6 5¤
8'∂12 4'6 '∂22 '∂11 '∂10
'2 '6 '3
= =
163
'ƒ0.558=Æ… = =0.7470 'ƒ0.00582=Æ… = =0.07629 'ƒ5660='ƒ100_56.6=10'ƒ56.6=75.23 'ƒ598000='ƒ10000_59.8=100'ƒ59.8=773.3 'ƒ550000='ƒ10000_55=100'∂55=741.6
7.570 7.675 7.681 0.7470 0.07629 75.23 773.3 741.6
164
'ƒ0.003 =Æ…;10£0º00; = =0.05477 'ƒ0.03 =Æ…;10#0; = =0.1732 'ƒ0.3 =Æ…;1£0º0; = =0.5477 'ƒ300 ='ƒ100_3 =10'3 =17.32 'ƒ3000 ='ƒ100_30 =10'∂30 =54.77 'ƒ30000 ='ƒ10000_3 =100'3 =173.2
0.05477 0.1732 0.5477 17.32 54.77 173.2 '∂30
10 '3 10
'∂30 100
'ƒ58.2 100 58.2
10000 'ƒ55.8
10 55.8
100
'∂35 7 '∂15
5 '∂10
5 '3
3 '∂35
7 '5_'7 '7_'7 '5
'7
개념
콕콕 33http://zuaki.tistory.com
165
Æ…;;™4∞;;_Æ;5*; =Æ…;;™4∞;;_;5*; ='∂10
166
Æ;3@;_'∂21=Æ…;3@;_21='∂14
167
'∂10_'∂0.5_Æ;5#;
=Æ…10_0.5_;5#;
=Æ…10_;2!;_;5#;
='3
168
5'5_3'7=5_3'ƒ5_7=15'∂35 a=15 3'2_2'5=3_2'ƒ2_5=6'∂10 b=10
a+b=15+10=25
169
3'∂2k_'7=3'ƒ2k_7=3'∂14k=3'∂154 14k=154 k=11
170
'8="√2¤ _2=2'2 a=2 '∂75="√5¤ _3=5'3 b=3
a+b=2+3=5
171
'ƒ4400="√2¤ _10¤ _11=20'∂11 'ƒ4400 '∂11 20
172
'ƒ5000="√10¤ _50=10'∂50 a=10 'ƒ50000="√100¤ _5=100'5 b=100
'ƒ10ab='ƒ10_10_100='ƒ10000=100
173
'2_'∂27_'8='ƒ2_27_8
="√2› _3‹
="√(2¤ _3)¤ _3
=12'3 a=12
'2_'∂27_'8='2_3'3_2'2
=3_2'ƒ2_3_2
=6"√2¤ _3
=12'3 a=12
174
-2'5=-"√2¤ _5=-'∂20
-3'2+"√(-3)¤ _2 -3'2=-"√3¤ _2
175
3'7="√3¤ _7='∂63 4'5="√4¤ _5='∂80 3'6="√3¤ _6='∂54 6'2="√6¤ _2='∂72
4'5
176
7'2="√7¤ _2='∂98='ƒ23+a
23+a=98 a=75 75
177
5'6='∂150='∂3a
3a=150 a=50 50
178
=Æ…;2!8$;=Æ;2!;
'∂50÷'∂10= =Æ…;1%0);='5
179
=Æ…;4•0;=Æ;5!;
=Æ…;1£5;=Æ;5!;
=Æ…;2§7;=Æ;9@;
'7÷'∂35= =Æ…;3¶5;=Æ;5!;
'∂10÷'∂50='∂10=Æ…;5!0);=Æ;5!;
'∂50 '7 '∂35 '6
'∂27 '3 '∂15
'8 '∂40
'∂50 '∂10 '∂14
'∂28
http://zuaki.tistory.com
180
'∂60÷'3÷'5='∂60_ _ '∂60÷'3÷'5=Æ…
'∂60÷'3÷'5='4=2
181
÷ = _
=Æ…;1!5$;_;;¢7∞;;
='6 a=6
182
10'a÷5'2=;;¡5º;;Æ;2A;=2Æ;2A;
10'a÷5'5=Æ…2¤ _;2A;='∂2a '6
2a=6 a=3
183
Æ…;10#0; = Æ…;7!2); =Æ…;3∞6; =
=Æ…;1!6@;=Æ;4#; =Æ…;2∞5;=Æ;5!;
=Æ…;14^4;=Æ…;2¡4;
184
'ƒ0.07=Æ…;10&0; =
185
Æ…;4@5%; =Æ;9%; = = a=3
=Æ;9@;='b b=;9@;
ab=3_;9@;=;3@;
186
'ƒ0.24=Æ…;1™0¢0; =Æ…;2§5; = k=;5!;
'6 5 '2
3
'5 a '5
3 '7 10 '6
12
'5 5 '∂12
4
'5 6 '3
10
'∂45 '7 '∂14 '∂15 '7 '∂45 '∂14 '∂15
60 3_5
1 '5 1 '3
187
'∂135="√3‹ _5=('3 )‹ _'5=a‹ b
188
'∂32="√2› _2=4'2=4a '∂63="√3¤ _7=3'7=3b '∂32-'∂63=4a-3b
189
'∂600="√10¤ _6=10'6=10a 'ƒ6000="√10¤ _60=10'∂60=10b 'ƒ60000="√100¤ _6=100'6=100a '∂0.6=Æ…;1§0º0; = =;1ı0;
'ƒ0.006=Æ…;10§0º00; = =;10B0;
190
'∂0.44=Æ…;1¢0¢0; =Æ…;2!5!; = =;5K;
191
= =
= = =
=Æ;3!;= = =
= =
=Æ;2!;= = =
192
= =
=
'5
193
= = = =
k=;1¡5;
194
= = = =
6a=42 a=7
'∂42 2 '∂6a
2 3'∂6a
6 3'a_'6
'6_'6 3'a
'6
'3 15 '3
5'3_'3 1
5'3 1
"√5¤ _3 1
'∂75
'∂10 15 '2_'5 3'5_'5
'2 3'5 '2
"√3¤ _5 '2
'∂45
'2 2 '2 '2_'2 1
'2 '6
'∂12
'∂15 3 '5_'3 '3_'3 '5
'3
'3 3 '3 '3_'3 1
'3 '2
'6
'3 9 '3
3'3_'3 1
3'3 1
'∂27
2'5 5 2_'5 '5_'5 2
'5
'∂11 5 '∂60 100 '∂60
10