2020 수학의 바이블 BOB 유형 중3-1 답지 정답

전체 글

(1)

본문 | 7 쪽

개념

콕콕

000

1

6, -6 ⑵ 14, -14 ⑶ 0 ⑷ 없다. ⑸ ;7!;, -;7!; ⑹ 1.2, -1.2

000

2

Ñ'1Œ2 ⑵ Ñ'4Œ2 ѾÐ;2¦0; ⑷ Ñ'¶2.9

000

3

4 ⑵ -13 ⑶ ;9@; ⑷ Ñ0.8

000

4

Ñ'6 ⑵ '6 ⑶ Ñ5 5 ⑸ Ñ®;7!; ⑹ ®;7!;

000

5

'5 ⑵ Ñ'1Œ3 ⑶ '2Œ4 ⑷ -'2Œ0

000

6

7 ⑵ -2.8 ⑶ -11 -17 ⑸ ;7$; ⑹ -;3@;

000

7

13 ⑵ -8 ⑶ 4 ⑷ -2

000

8

3a ⑵ 2a ⑶ -5a ⑷ -4a

000

9

< ⑵ > ⑶ < ⑷ < Ⅰ. 제곱근과 실수

1.

제곱근의 뜻과 성질

본문 | 8 ~ 16 쪽

유형

콕콕

00

10

00

11

00

12

00

13

27

00

14

00

15

00

16

③, ⑤

00

17

00

18

②, ④

00

19

00

20

-3

00

21

28`cmÛ`

00

22

'6Œ3

00

23

'3Œ4`cm

00

24

'6Œ1`cm

00

25

00

26

00

27

00

28

①, ⑤

00

29

00

30

00

31

00

32

-7

00

33

00

34

00

35

00

36

21

00

37

②, ⑤

00

38

00

39

00

40

00

41

00

42

00

43

a-3b

00

44

-4a-3b

00

45

00

46

00

47

00

48

2a-2c

00

49

00

50

00

51

00

52

00

53

6

00

54

00

55

147

00

56

15

00

57

4

00

58

00

59

00

60

00

61

00

62

00

63

00

64

61

00

65

00

66

00

67

'¶5.9, '1Œ1, ¾Ð 625 , 4, '2Œ3 본문 | 17 ~ 19 쪽

실력

콕콕

00

81

②, ⑤

00

82

'6

00

83

'7Œ2 cm  

00

84

'1Œ2 cm 

00

85

5

00

86

ㄷ, ㄹ

00

87

00

88

-1

00

89

5

00

90

00

91

8

00

92

00

93

00

94

90

00

95

00

96

00

97

00

98

00

99

2x+10

0

100

2a

0

101

0

102

0

103

0

104

9 본문 | 20 ~ 21 쪽

서술형

콕콕

0

105

11

0

106

1

0

107

-6

0

108

4

0

109

a+6b

0

110

-2a+2b

0

111

9

0

112

16

0

113

12

0

114

5

0

115

52

0

116

22 본문 | 24 ~ 28 쪽

유형

콕콕

0

123

3개

0

124

0

125

①, ④

0

126

0

127

0

128

0

129

ㄱ, ㄷ

0

130

0

131

0

132

0

133

③ 

0

134

5

0

135

P : -1-'1Œ8, Q : 1+'8

0

136

3-'1Œ1

0

137

③, ⑤

0

138

-2+'1Œ3

0

139

④, ⑤

0

140

0

141

③, ④

0

142

0

143

0

144

구간 B

0

145

0

146

ㄷ, ㅁ

0

147

0

148

5개

0

149

③, ④

0

150

0

151

0

152

0

153

0

154

c<a<b 

0

155

B

0

156

'2+'5

00

68

11

00

69

00

70

00

71

1

00

72

4

00

73

00

74

12개

00

75

00

76

3

00

77

00

78

9

00

79

00

80

④ 본문 | 23 쪽

개념

콕콕

0

117

⑴ 무 ⑵ 유 ⑶ 무 ⑷ 유 ⑸ 무 ⑹ 유

0

118

⑴ × ⑵ ◯ ⑶ × ⑷ ◯

0

119

'1Œ0 ⑵ -'5

0

120

⑴ ◯ ⑵ × ⑶ ◯ ⑷ × ⑸ × ⑹ ◯

0

121

-3, -'¶7.1, -'5, ¾Ð15 4 , 2

0

122

< ⑵ > ⑶ > ⑷ > ⑸ < ⑹ >

2.

무리수와 실수

본문 | 29 ~ 31 쪽

실력

콕콕

0

157

0

158

①, ⑤

0

159

25개

0

160

0

161

0

162

0

163

0

164

5-'1Œ2

0

165

3-p 

0

166

0

167

-2-'1Œ0

0

168

①, ④

0

169

0

170

16

0

171

②, ④

0

172

0

173

①, ④

0

174

0

175

-'2Œ0, -'1Œ0, '1Œ0, '2Œ0, 풀이 참조 본문 | 32 ~ 33 쪽

서술형

콕콕

0

176

138개

0

177

90개

0

178

-1+'1Œ7

0

179

1+'1Œ0

0

180

60

0

181

42

0

182

8개

0

183

5개

0

184

4, 2-'5

0

185

'5+3, -'8-2

(2)

빠른 정답

95

빠른 정답 본문 | 58 ~ 68 쪽

유형

콕콕

0

332

13

0

333

0

334

0

335

4

0

336

0

337

0

338

0

339

1

0

340

0

341

11 25

0

342

0

343

0

344

1 8

0

345

0

346

0

347

7

0

348

0

349

0

350

0

351

17

0

352

0

353

0

354

0

355

-321 

0

356

④ 

0

357

0

358

xÛ`-7x-2

0

359

1 5

0

360

4

0

361

0

362

0

363

2

0

364

0

365

0

366

0

367

11

0

368

20xÛ`+x-12

0

369

0

370

25aÛ`-30ab+18bÛ`

0

237

'2

0

238

3'3`cm

0

239

16'3`cmÛ`

0

240

4'3`cm

0

241

10`cm

0

242

6'3`cmÛ`

0

243

1854

0

244

537.3 

0

245

22

0

246

0

247

③, ④

0

248

0

249

0

250

6

0

251

18'6

0

252

0

253

0

254

'¶10 

0

255

0

0

256

0

257

28

0

258

3'6-2'3

0

259

;3!;

0

260

-2

0

261

8

0

262

;3$;

0

263

0

264

56

0

265

0

266

0

267

0

268

34

0

269

0

270

0

271

6

0

272

'2

0

273

0

274

0

275

0

276

5+15'6

0

277

0

278

0

279

5

0

280

3 ⑵ 5

0

281

0

282

0

283

0

284

9-'3 

0

285

28'6`cm

0

286

3

0

287

13'2`cm

0

288

24'3`cmÜ`

0

289

15

0

290

-1+2'2

0

291

-6-2'5

0

292

0

293

0

294

② 

0

295

b<a<c 본문 | 38 ~ 49 쪽

유형

콕콕

0

199

0

200

0

201

12

0

202

3

0

203

-8'7 

0

204

0

205

6배

0

206

'2

0

207

57 

0

208

0

209

15

0

210

4'5

0

211

②, ⑤

0

212

;9@;

0

213

0

214

30

0

215

0

216

0

217

0

218

3

0

219

'33

0

220

0

221

11

0

222

ㄱ, ㄷ, ㄹ

0

223

'2  '5

0

224

32

0

225

0

226

0

227

0

228

10

0

229

518 '2 

0

230

0

231

8'3

0

232

0

233

;2#; 

0

234

2'3

0

235

9'6`cmÛ`

0

236

4'2`cm 본문 | 35, 37 쪽

개념

콕콕

0

186

'2Œ6 ⑵ '6Œ6 ⑶ '6 ®;6%; ⑸ 4'2Œ1 ⑹ 6'1Œ0 

0

187

'2 ⑵ '5 ⑶ '6 ⑷ 2®;2#;

0

188

3'3 ⑵ 6'2 ⑶ -4'5 ⑷ -2'1Œ7

0

189

'2Œ0 ⑵ '4Œ8 ⑶ -'5Œ0 ⑷ -'5Œ4

0

190

⑴ '56

⑵ '16Œ1

⑶ '101Œ3 ⑷ - '35

0

191

⑴ ®Â 3 25 ⑵ ®Â36 ⑶ -®Â5 49 2 ⑷ -®Â 3 64 ⑸ ®Â63 4 ⑹ -®Â50 36

0

192

⑴ '5 5 ⑵ -5'6 6 ⑶ '¶1177 2'3 9 ⑸ '¶1015 ⑹ -314 '7

0

193

1.435 ⑵ 1.507 ⑶ 1.533 ⑷ 1.578

0

194

10.1 ⑵ 13.3 ⑶ 12.0 ⑷ 14.4

0

195

100, 10, 14.14 ⑵ 20, 20, 44.72 100, 10, 0.1414 ⑷ 20, 20, 0.4472

0

196

⑴ 4'5 ⑵ 10'3 ⑶ '¶10 ⑷ -2'2 ⑸ 2'6

0

197

⑴ 5'2 ⑵ 6'5 ⑶ -'6 ⑷ '2

0

198

⑴ '6+'¶10 ⑵ 10'2-'¶10 ⑶ 3-'¶10

2

'3+2 

4

'6

4'3 3

3.

근호를 포함한 식의 계산

본문 | 50 ~ 51 쪽

실력

콕콕

0

296

30

0

297

17

0

298

;5^;

0

299

0

300

;;ª5¦;;

0

301

0

302

20

0

303

0

304

72'3p`cmÜ`

0

305

12'5`cm

0

306

5'2-7

0

307

0

308

0

309

8'3-13

0

310

18'2`cm

0

311

6+4'¶10

0

312

47 본문 | 52 ~ 53 쪽

서술형

콕콕

0

313

2'3 3

0

314

'1Œ5 2

0

315

2 

0

316

3

0

317

9

0

318

10 

0

319

3

0

320

2

0

321

1

0

322

8 3

0

323

-1+'6

0

324

10-7'2 본문 | 57 쪽

개념

콕콕

0

325

ac+2ad+3bc+6bd 4xy-8x+3y-6 2xÛ`-xy+x-3yÛ`+y 

0

326

aÛ`+2a+1 ⑵ 4xÛ`+4x+1 aÛ`-4a+4 ⑷ 9xÛ`-30x+25 aÛ`-9 ⑹ 25aÛ`-4xÛ`-2x-15 ⑻ xÛ`+7xy-44yÛ` 6aÛ`+11a+4 ⑽ 8xÛ`-22x+15 

0

327

1, 1, 10201 3, 600, 9, 940950, 50, 2500, 2491   ⑷ '1Œ3, '7, 13, 6

0

328

⑴ '5-2 ⑵ 3+'7 ⑶ 5'2-3'5  ⑷ '1Œ0+'6 2

⑸ 3-2'2 ⑹ 13+27'3Œ0

0

329

2xy, -2, 18 ⑵ 4xy, -4, 20

0

330

2xy, 4, 13 ⑵ 4xy, 8, 17

0

331

2, 2, 23 ⑵ 4, 4, 21 Ⅱ. 다항식의 곱셈과 인수분해

1.

다항식의 곱셈

BOB중등 3가-정답.indb 95 19. 8. 12. 오후 1:55

(3)

본문 | 72 ~ 73 쪽

서술형

콕콕

0

445

37

0

446

-17

0

447

73

0

448

24

0

449

13

0

450

56

0

451

6

0

452

12

0

453

17

0

454

40

0

455

4

0

456

5 본문 | 88 ~ 89 쪽

서술형

콕콕

0

548

22

0

549

34

0

550

2, 18

0

551

2, 50

0

552

2x+2

0

553

2x-11

0

554

22

0

555

42

0

556

-2

0

557

3

0

558

n=5, 13

0

559

n=4, 19 본문 | 69 ~ 71 쪽

실력

콕콕

0

421

0

422

25

0

423

3

0

424

0

425

6xÛ`+7x-20

0

426

0

427

27

0

428

3xÛ`-21x-6

0

429

22xÛ`+86x-26

0

430

6pxy

0

431

0

432

0

433

0

434

0

435

-1

0

436

0

437

23+2'1Œ5

0

438

0

439

-1+'5

0

440

17

0

441

0

442

0

443

0

444

0 본문 | 85 ~ 87 쪽

실력

콕콕

0

525

0

526

0

527

0

528

4

0

529

-2a

0

530

0

531

21

0

532

0

533

2x+10

0

534

5개

0

535

0

536

12

0

537

0

538

0

539

-3

0

540

-45

0

541

-11

0

542

-6

0

543

20x

0

544

4x-6

0

545

0

546

6

0

547

2x+5 본문 | 75, 77 쪽

개념

콕콕

0

457

3x+12 ⑵ xÛ`+5x ⑶ xÛ`+8x+16 xÛ`-6x+9 ⑸ xÛ`+x-6 6xÛ`-13x-5

0

458

x, x(x+y) ⑵ 3, xy, y(x-2) x+2, (x+2)(x-7) 2x-y, xÛ`+3xy

0

459

3a(x-y) ⑵ 2xy(x+3y) x(a+b-cx)

0

460

(x+2)(ab-c) (x-y)(x-y-a) ⑶ 3a(x+1)

0

461

(x+2)Û` ⑵ (6x+1)Û` ⑶ (x+5y)Û`(x-9)Û` ⑸ (7x-3)Û` ⑹ {x-;4!;}Û`

0

462

49 ⑵ 25 ⑶ ;4(; ⑷ Ñ16 ⑸ Ñ20 ⑹ Ñ;5@;

0

463

(x+5)(x-5) {x+;4!;}{x-;4!;} (6x+1)(6x-1) (4x+7y)(4x-7y)

0

464

1, 5 ⑵ -1, 7 -4, 3 ⑷ -6, -5

0

465

-2x, -4, -4x, 4 -x, 9, 9x, 9

0

466

(x+3)(x+4) ⑵ (x-2)(x-6) (x-3)(x+6) ⑷ (x+2)(x-12)

0

467

3x, 3x, -1, -x, 3x-1 -6x, 2x, -1, -2x, 2x-1

0

468

(x+3)(2x+1) (x-1)(3x-2) (2x+1)(2x-3) (2x-3)(5x+9)

2.

다항식의 인수분해

⑶⑷⑸⑹⑺

0

371

aÛ`-3a-40

0

372

20

0

373

0

374

0

375

0

376

4xÛ`-12xy+9yÛ`+4x-6y+1

0

377

21

0

378

0

379

xÝ`+4xÜ`-14xÛ`-36x+45

0

380

0

381

5

0

382

0

383

0

384

0

385

163

0

386

0

387

2

0

388

0

389

4+4'3

0

390

0

391

- 4 3

0

392

0

393

0

394

4

0

395

16

0

396

8

0

397

0

398

29 ⑵ 9

0

399

25

0

400

4

0

401

0

402

0

403

0

404

62

0

405

0

406

32

0

407

12+2'7

0

408

0

409

0

410

0

411

Ñ4'2

0

412

54

0

413

0

414

0

415

4'1Œ1

0

416

0

417

0

418

0

419

0

420

5

0

499

0

500

3

0

501

5

0

502

5x+1

0

503

0

504

0

505

0

506

8

0

507

0

508

0

509

7

0

510

0

511

0

512

0

513

0

514

23

0

515

0

516

⑴ xÛ`-3x-10 ⑵ (x+2)(x-5)

0

517

0

518

0

519

0

520

4x+10

0

521

2x+1

0

522

0

523

0

524

2x+6 본문 | 78 ~ 84 쪽

유형

콕콕

0

469

0

470

0

471

0

472

0

473

0

474

0

475

0

476

0

477

0

478

0

479

0

480

18

0

481

14

0

482

0

483

1

0

484

4

0

485

0

486

;2(;

0

487

0

488

2x

0

489

0

490

0

491

11

0

492

0

493

0

494

0

495

②, ④

0

496

(x-2)(x+7)

0

497

-10

0

498

-3

(4)

빠른 정답

97

빠른 정답 본문 | 116 ~ 117 쪽

서술형

콕콕

0

732

2

0

733

2

0

734

10 

0

735

-2

0

736

k=-1, x=2

0

737

k=-;3@;, x=-2

0

738

x=;4&;

0

739

x=4

0

740

26

0

741

16

0

742

12

0

743

15 본문 | 106 ~ 113 쪽

유형

콕콕

0

652

ㄷ, ㅁ, ㅂ

0

653

0

654

-5

0

655

0

656

0

657

0

658

0

659

x=1

0

660

0

661

0

662

-16

0

663

0

664

0

665

0

666

11

0

667

7

0

668

0

669

-3

0

670

0

671

5

0

672

0

673

0

674

0

675

x=1 또는 x=5

0

676

0

677

x=;3!; 

0

678

0

679

0

680

0

681

2

0

682

0

683

1

0

684

③, ⑤

0

685

3개

0

686

0

687

3

0

688

0

689

①, ⑤

0

690

0

691

a=-;2%;일 때 x=5`, a=1일 때 x=-2

0

692

0

693

0

694

;2%; 

0

695

-;2&;

0

696

0

697

0

698

-2

0

699

16

0

700

0

701

0

702

0

703

3

0

704

a¾2

0

705

0

706

0

707

0

708

0

709

;;Á4£;;

0

710

36

0

711

0

712

-5

0

713

0

714

0

715

6 본문 | 114 ~ 115 쪽

실력

콕콕

0

716

0

717

0

718

0

719

0

720

0

721

0

722

0

723

-2

0

724

;3!;

0

725

0

726

③, ⑤

0

727

0

728

18

0

729

37

0

730

0

731

③ 본문 | 92 ~ 97 쪽

유형

콕콕

0

568

0

569

(a+b)(3a+b)(3a-b)

0

570

②, ③

0

571

-8

0

572

0

573

0

574

0

575

2x+1

0

576

0

577

0

578

0

579

9

0

580

0

581

0

582

(6x+2y+3)(6x-2y+7)

0

583

㉡, -(5x-2)(6x+13)

0

584

-26

0

585

0

586

0

587

(x+2)(x-2)(xÛ`-6)

0

588

-6

0

589

③, ⑤

0

590

0

591

0

592

0

593

0

594

②, ④

0

595

2x

0

596

0

597

0

598

①, ⑤

0

599

0

0

600

x-y+3

0

601

0

602

0

603

1

0

604

1600

0

605

0

606

0

607

0

608

0

609

7

0

610

0

611

0

612

0

613

-7

0

614

-2'3-3

0

615

0

616

0

617

① 본문 | 98 ~ 99 쪽

실력

콕콕

0

618

0

619

②, ④

0

620

0

621

4개

0

622

0

623

-8

0

624

(x-1)(x-2)(x+1)(x-4)

0

625

24

0

626

0

627

ㄱ, ㄷ, ㅁ

0

628

x+y+1

0

629

0

630

;1¦0;

0

631

0

632

0

633

150p mÛ` 본문 | 100 ~ 101 쪽

서술형

콕콕

0

634

3

0

635

12

0

636

2x+2y-2

0

637

2x-4y-5

0

638

64

0

639

54

0

640

4585

0

641

18

0

642

200

0

643

22'1Œ3+77 본문 | 105 쪽

개념

콕콕

0

644

⑴ × ⑵ ◯ ⑶ × ⑷ ◯

0

645

⑴ ◯ ⑵ × ⑶ ◯

0

646

x=0 또는 x=1 x=-5 또는 x=-2 x=-;3$; 또는 x=;3!;

0

647

x=0 또는 x=-7 x=-8 또는 x=8 x=2 또는 x=3 x=-;3!; 또는 x=3

0

648

x=5 ⑵ x=;3!; ⑶ x=-;2%;

0

649

x=Ñ'3 ⑵ x=-1Ñ'3 x=-2Ñ'2

0

650

(x+1)Û`=5 ⑵ (x+2)Û`=7 (x-1)Û`=4 ⑷ (x-3)Û`=12

0

651

x=2Ñ'6 ⑵ x=-3Ñ2'5 x=1Ñ'3 ⑷ x=-2Ñ'2 Ⅲ. 이차방정식

1.

이차방정식의 풀이

본문 | 91 쪽

개념

콕콕

0

560

y(x+3)Û` ⑵ a(x+4y)(x-4y) 2b(x+1)(x-4) xÛ`(x+5)(x-5)

0

561

(x+y+2)Û` (x-3y-2)(x-3y+3) (3x+5)(3x-1) 4(x+1)(x+3) 

0

562

b-1 ⑵ x+1

0

563

(x+1)(3y+1) (x+1)(x-1)(y+1)

0

564

x+7 ⑵ 2a-1

0

565

(a+b-4)(a-b-4) (x+y-2)(x-y+2)

0

566

30 ⑵ 900 ⑶ 3200

0

567

400 ⑵ 900 ⑶ 4'3 ⑷ 1

3.

인수분해 공식의 활용

BOB중등 3가-정답.indb 97 19. 8. 12. 오후 1:55

(5)

본문 | 138 ~ 139 쪽

서술형

콕콕

0

882

-2

0

883

2

0

884

2xÛ`+3x-6=0

0

885

6xÛ`-24x+2=0

0

886

-3

0

887

4

0

888

8

0

889

3

0

890

15

0

891

12명

0

892

10

0

893

5 본문 | 122 ~ 134 쪽

유형

콕콕

0

757

0

758

0

759

2'2

0

760

0

761

1

0

762

0

763

x=-1Ñ'5

0

764

0

765

0

766

0

767

0

768

x=-4

0

769

0

770

0

771

x=-3Ñ'2Œ2 

0

772

④ 

0

773

0

774

0

775

0

776

3+'2Œ9

0

777

0

778

ㄷ, ㄹ

0

779

0

780

1

0

781

0

782

0

783

0

784

1

0

785

2

0

786

x=1 또는 x=4

0

787

0

788

0

789

k<3

0

790

0

791

0

792

0

793

0

794

0

795

0

796

-;3%;

0

797

0

798

0

799

8

0

800

0

801

0

802

0

803

0

804

6

0

805

x=-3 또는 x=2

0

806

1

0

807

x=-4 또는 x=1

0

808

x=-2Ñ'1Œ9

0

809

0

810

4

0

811

0

812

-16

0

813

0

814

0

815

8명

0

816

0

817

0

818

1

0

819

24

0

820

26

0

821

0

822

20

0

823

0

824

6, 8, 10

0

825

0

826

0

827

0

828

;;Á2°;;

0

829

0

830

0

831

0

832

4초

0

833

3`cm

0

834

9

0

835

0

836

4`cm

0

837

8`cm

0

838

6`cm

0

839

17`cm

0

840

0

841

0

842

4`cm

0

843

(-3+3'2 )`cm 

0

844

0

845

0

846

0

847

(18+12'3)p`m

0

848

0

849

2

0

850

8`cmÛ`

0

851

17초

0

852

2`cm

0

853

13`cm

0

854

3`cm

0

855

2`m

0

856

0

857

4`m 본문 | 135 ~ 137 쪽

실력

콕콕

0

858

0

859

0

860

4

0

861

0

862

0

863

4

0

864

1

0

865

0

866

-2

0

867

0

868

0

869

0

870

-10, 10

0

871

0

872

0

873

6명

0

874

0

875

18 

0

876

40`cmÛ`

0

877

2초

0

878

0

879

3+'5

0

880

0

881

16마리 또는 48마리 본문 | 119, 121 쪽

개념

콕콕

0

744

⑴ x=-1Ñ2'2Œ1 ⑵ x=3Ñ2'2Œ1 ⑶ x=-5Ñ6'1Œ3 ⑷ x=1Ñ4'3Œ3 ⑸ x=11Ñ10'6Œ1 ⑹ x=3Ñ6'3Œ3

0

745

⑴ x=-1Ñ'2 ⑵ x=1Ñ'7 ⑶ x=-2Ñ2'1Œ0 ⑷ x=4Ñ3'1Œ0 ⑸ x=-2Ñ3 '7 ⑹ x=-3Ñ2'1Œ1

0

746

⑴ x=-;4!; 또는 x=1 ⑵ x=2Ñ'6 ⑶ x=;2!; 또는 x=;3!;  ⑷ x=5Ñ2'2Œ9 ⑸ x=-2Ñ2 '6 ⑹ x=2Ñ'7 ⑺ x=-1 또는 x=1

0

747

0 ⑵ 1개 ⑶ -23 0개 ⑸ 32 ⑹ 2개

0

748

2개 ⑵ 1개 ⑶ 2개 ⑷ 0개

0

749

-5, 1 ⑵ 2, -7 -;2!;, -;2#; ⑷ 2, ;3@;

0

750

xÛ`-2x-3=0 ⑵ xÛ`+4x=0 xÛ`-4x+4=0 ⑷ xÛ`-;5#;x-;5@;=0

0

751

xÛ`-6x+5=0 -2xÛ`-14x-20=0 -4xÛ`+4x-1=0 3xÛ`+9x+6=06xÛ`-x-1=0 

0

752

2+'2 ⑵ -4-'5 6-'1Œ0 ⑷ -1+5'3

0

753

xÛ`+2x-8=0 x=-4 또는 x=2

0

754

x+1 ⑵  xÛ`+x-90=0 x=9 ⑷ 9, 10

0

755

0 m ⑵ 10초

0

756

xÛ`-14x+40=0 x=4 또는 x=10 ⑶ 4`cm

2.

이차방정식의 활용

⑶⑷⑸⑹⑺ 본문 | 143, 145 쪽

개념

콕콕

0

894

⑴ ◯ ⑵ _ ⑶ ◯ ⑷ _ ⑸ _ ⑹ ◯

0

895

y=700x, _ ⑵ y=6xÛ`, ◯ y=xÛ`+4x, ◯ ⑷ y=3x, _

0

896

-1 ⑵ -1 ⑶ 2 ⑷ -;4&;

0

897

0, 0 ⑵ 아래 ⑶ y, x=0 ⑷ 증가

0

898

0, 0 ⑵ 위 ⑶ y, x=0 ⑷ 감소

0

899

⑴ ㄱ, ㄹ, ㅁ ⑵ ㄴ, ㄷ, ㅂ ⑶ ㄹ ⑷ ㄴ ⑸ ㄱ과 ㅂ

0

900

y=3xÛ`+2 ⑵ y=-;3$;xÛ`-;2!;

0

901

{0, -;2!;}, x=0 ⑵ {0, ;5!;}, x=0

0

902

a>0, q<0 ⑵ a<0, q>0

0

903

y=3(x+2)Û` ⑵ y=;2!;(x-3)Û` Ⅳ. 이차함수

1.

이차함수의 그래프 ⑴

(6)

빠른 정답

99

빠른 정답 본문 | 174 ~ 175 쪽

서술형

콕콕

1098

3

1099

-2

1100

x>3

1101

x>-1

1102

9

1103

6

1104

27

1105

64

1106

(2, -1)

1107

(3, 10)

1108

16

1109

4 본문 | 164 ~ 171 쪽

유형

콕콕

1025

1026

1027

22

1028

1029

1030

-9

1031

1032

1033

1034

1035

(0, -1)

1036

1037

1038

1039

k>-1

1040

-9

1041

1042

k>11

1043

1044

1045

(4, -3)

1046

-5

1047

1048

1049

1050

1051

1

1052

1053

①, ③

1054

1055

1056

1057

3

1058

1059

8

1060

1061

1062

1063

1064

2 사분면

1065

1066

1067

1068

y=;2!;xÛ`+6x+18

1069

1070

-17

1071

25

1072

1073

2

1074

1075

1076

1077

1078

-2

1079

1080

1081

-5

1082

④ 본문 | 161, 163 쪽

개념

콕콕

1013

4, 4, 2, 2

1014

y=(x+1)Û`-4, (-1, -4), x=-1y=-(x-2)Û`+7, (2, 7), x=2y=;2!;(x-3)Û`-;;ª2Á;;, {3, -;;ª2Á;;}, x=3y=-;4!;(x+2)Û`+2, (-2, 2), x=-2

1015

0, 0, 0, 6, 6, 6, -6, -6

1016

(-1, 0), (1, 0) / (0, -3) (-3, 0), (1, 0) / (0, 6)

1017

> ⑵ >, > ⑶ <

1018

< ⑵ <, > ⑶ >

1019

2, 3, 1, 4, 1, y=xÛ`-4x+7

1020

y=2(x-2)Û` ⑵ y=3(x-1)Û`-1

1021

2, 0, 4, 1, -1, y=xÛ`-4x+3

1022

y=-2(x-1)Û` y=;8!;(x+3)Û`+;8&;

2.

이차함수의 그래프 ⑵

본문 | 172 ~ 173 쪽

실력

콕콕

1083

1084

1085

1086

1087

1088

4

1089

1090

1091

1092

-1

1093

1094

1095

133 2

1096

1097

(400, 10) 본문 | 146 ~ 155 쪽

유형

콕콕

0

910

0

911

ㄱ, ㄷ, ㅂ

0

912

②, ⑤

0

913

0

914

0

915

0

916

0

917

-19

0

918

0

919

⑴ ㉡ ⑵ ㉣ ⑶ ㉤ ⑷ ㉠

0

920

0<a<2

0

921

0

922

0

923

0

924

②, ⑤

0

925

0

926

0

927

ㄴ, ㄹ

0

928

-16

0

929

0

930

-3

0

931

0

932

0

933

0

934

y=-;2#;xÛ`

0

935

0

936

0

937

-3

0

938

0

939

0

940

0

941

④, ⑤

0

942

0

943

-2

0

944

-6

0

945

0

946

5

0

947

0

948

81

0

949

0

950

0

951

0

952

2, 4

0

953

0

954

제 1 사분면

0

955

9

0

956

;3&;

0

957

-16

0

958

0

959

0

960

7

0

961

0

962

;2!;

0

963

0

964

-2

0

965

0

966

0

967

y=-2(x-3)Û`+8

0

968

0

969

-2

0

970

(0, 7)

0

971

0

972

-1

0

973

0

974

0

975

0

976

-2

0

977

0

978

0

979

0

980

0

981

0

982

0

983

0

984

0

985

④ 본문 | 156 ~ 157 쪽

실력

콕콕

0

986

0

987

0

988

4

0

989

0

990

2

0

991

0

992

0

993

1

0

994

0

995

0

996

0

997

-1<k<3

0

998

50

0

999

1000

⑤ 본문 | 158 ~ 159 쪽

서술형

콕콕

1001

-2

1002

-2, 6

1003

9

1004

-5

1005

36

1006

-8

1007

;4!;

1008

-;4!;

1009

1

1010

-2

1011

x>2

1012

x<2

0

904

(-3, 0), x=-3 {;2!;, 0}, x=;2!;

0

905

a>0, p<0 ⑵ a<0, p>0

0

906

y=2(x-3)Û`+4 y=-(x-1)Û`-2

0

907

(1, 4), x=1 (-2, -3), x=-2

0

908

>, <, < ⑵ <, =, >

0

909

y=2(x-2)Û`-2 y=-(x+4)Û`+5 y=4(x+2)Û`+3

1023

-1, 7, a-b-2, 9, 1, 5, a+b-2, 7, 8, -1, y=8xÛ`-x-2

1024

2, 2, 0, 8, -4, -2, -2, 2, 2, -2xÛ`+8 (94~104)ET중등BOB수학3가 6빠른정답-초.indd 99 19. 8. 14. 오후 2:06

수치

Updating...

참조

Updating...

관련 주제 :