132 Chapter 1 Equations and Inequalities 43. (2x + 1)2 = 27 44. (5y + 2)? - 48 = 0 77. 3x2 = - 5x 1 78. 2x = 5x + 11 45. (5x + 1)2 = -8 46. (7y + 2)2 + 48 = 0 79. x + 1 = -7x 80. 13x + 1 = -10x 81. 3x + 6x = -1 82. 2x(x + 3) = -1 Complete the square to make each a perfect-square trinomial. 47. x2 + 6x 48. x? + 8x 83. 7x = 2x + 2 84. 5x x + = 3 49. x - 4x 50. x – 12x 85. x + 2x + 2 = 0 86. a + 4a + 8 = 0 51. a + 5a 52. 12 + 9t 87. y + 4y + 5 = 0 88. x² + 2x + 5 = 0 53. 7 - 11r 54. s? - 7s 89. x2 - 2x = -5 90. z2 – 3z = -8 3 55. y + 3 56. p + p 2 2 x%3D 9 5 91. x - 92. x + = X 1 57. q - 2 58. m - " 59 Solve each formula for the indicated variable. 1 93. h = 28 Solve each equation by completing the square. 94. x² + y? = r; x 59. x + 12x = -8 60. x - 6x = -1 61. x - 10x + 37 = 0 62. a + 16a + 82 = 0 95. h = 641 – 161; t 96. y = 16x - 4; x 63. x² + 5 = -5x 64. x2 + 1 = -4x = 1; x b? 97. 98. 1; y b²
132 Chapter 1 Equations and Inequalities 43. (2x + 1)2 = 27 44. (5y + 2)? - 48 = 0 77. 3x2 = - 5x 1 78. 2x = 5x + 11 45. (5x + 1)2 = -8 46. (7y + 2)2 + 48 = 0 79. x + 1 = -7x 80. 13x + 1 = -10x 81. 3x + 6x = -1 82. 2x(x + 3) = -1 Complete the square to make each a perfect-square trinomial. 47. x2 + 6x 48. x? + 8x 83. 7x = 2x + 2 84. 5x x + = 3 49. x - 4x 50. x – 12x 85. x + 2x + 2 = 0 86. a + 4a + 8 = 0 51. a + 5a 52. 12 + 9t 87. y + 4y + 5 = 0 88. x² + 2x + 5 = 0 53. 7 - 11r 54. s? - 7s 89. x2 - 2x = -5 90. z2 – 3z = -8 3 55. y + 3 56. p + p 2 2 x%3D 9 5 91. x - 92. x + = X 1 57. q - 2 58. m - " 59 Solve each formula for the indicated variable. 1 93. h = 28 Solve each equation by completing the square. 94. x² + y? = r; x 59. x + 12x = -8 60. x - 6x = -1 61. x - 10x + 37 = 0 62. a + 16a + 82 = 0 95. h = 641 – 161; t 96. y = 16x - 4; x 63. x² + 5 = -5x 64. x2 + 1 = -4x = 1; x b? 97. 98. 1; y b²
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter4: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 13CC
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