Precalculus Essentials 5th Edition Blitzer SOLUTIONS MANUAL Full download at: Precalculus Essentials 5th Edition Blitzer TEST BANK Full download at: Chapter 2 Polynomial and Rational Functions 2i 3 = −14 + Section 2.1 2 2i 3 = −14 + Check Point Exercises 2 2 1. a. (5 2i) (3 − + + 3i) 5 2i 3 = − + + 3i c. −14 + −12 = −14 + 12 i 2 2 (5 3) (−2 = + + + b. (2 6i) + − 3)i 5. 2x 2 0 x2 (12 − + = i) − 2 6i 8 = + 1, 2 = + a b c = = −2, = i −12 + 2 i 3 i = −7 + (2 (6 = −12) + +1)i 4ac x b = −b ± − 7i 2a = −10 + 7i(2 9i) 7i(2) − = − 2. a. −(−2) (−2)2 4(1)(2) − 7i(9i) ± 2(1) x = 14i 63i2 = − 14i = − 4 8 − 63(−1) 63 14i = + 2 2 x = ± 2 x = ± −4 b. (5 4i)(6 7i) 30 35i 24i + − = − + − 2 28i2 2 2i x = ± 2 30 35i 24i = − + − 1 x i = ± 28(−1) The solution set is {1 1 i, i}. + − 30 28 35i 24i = + − + 58 = −11i
Precalculus Essentials 5th Edition Blitzer SOLUTIONS MANUAL Full download at: Precalculus Essentials 5th Edition Blitzer TEST BANK Full download at: Chapter 2 Polynomial and Rational Functions Section 2.1 Check Point Exercises 1. a. (5 − 2i) + (3 + 3i) = 5 − 2i + 3 + 3i c. −14 + −12 = −14 + i 12 2 2 = −14 + 2i 3 2 = −14 + 2i 3 2 2 = (5 + 3) + (−2 + 3)i = 8 + i b. (2 + 6i) − (12 − i) = 2 + 6i −12 + i 5. x2 − 2x + 2 = 0 a = 1, b = −2, c = 2 2 = −7 + i 3 = (2 −12) + (6 +1)i = −10 + 7i x = −b ± b − 4ac 2a 2. a. 7i(2 − 9i) = 7i(2) − 7i(9i) −(−2) ± x = (−2)2 − 4(1)(2) 2(1) = 14i − 63i2 = 14i − 63(−1) = 63 + 14i x = 2 ± 4 − 8 2 b. (5 + 4i)(6 − 7i) = 30 − 35i + 24i − 28i2 = 30 − 35i + 24i − 28(−1) = 30 + 28 − 35i + 24i = 58 −11i x = 2 ± −4 2 x = 2 ± 2i 2 x = 1 ± i The solution set is {1 + i, 1 − i}.
Precalculus-Essentials-5th-Edition-Blitzer-Solutions-Manual.docx