Concept explainers
For Exercises 41–54, write the equation in the form
. Then if the equation represents a
(Hint: Divide by 10 to make the
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College Algebra (Collegiate Math)
- For Exercises 99–103, perform the indicated operations. 1 + =i 6. 99. + -i 100. (4 – 7i)(5 + i) 3 5 101. (4 – 6i)? 102. (8 – 3i)(8 + 3i) 4 + 3i 103. 3 - iarrow_forward–4(–6m – 7).arrow_forwardFor Exercises 81–100, make an appropriate substitution and solve the equation. (See Examples 10–11) 81. (2x + 5)? – 7(2x + 5) - 30 = 0 82. (Зх — 7)? - 6(3х — 7)-16 3D 0 83. (x + 2x)? – 18(r + 2x) = -45 84. (x + 3x)? - 86. (у? — 3)? — 9(y? — 3) — 52 %3D 0 14(x + 3x) = -40 85. (x + 2)2 + (x + 2) – 42 = 0 10 2 10 - 61 m - - 27 = 0 x + + 35 = 0 87. 88. - 121 x + т - m m 89. 2 + 2 + = 12 90. + 3 + 6 + 3 = -8 91. 5c2/5 11c/5 + 2 = 0 92. З3 d'/3 – 4 = 0 93. y'/2 – y/4 6 = 0 94. n'/2 + 6n/4 – 16 = 0 95. 9y 10y + 1 = 0 96. 100х-4 29x-2 + 1 = 0 | 97. 4t – 25 Vi = 0 98. 9m – 16Vm = 0 100. 392 + 16q -1 99. 30k-2 – 23k- + 2 = 0 + 5 = 0arrow_forward
- 2. Expand and simplify to express each equation in standard form. [2, 2, 2, 3, 3, 2] a) y = (x + 5)(x + 2) b) y = (x- 4)(x+ 3) c) y = (2x- 3)(x-6) d) y = (3x + 4)2 e) y = 3(x – 4)2 +1 f) y = (4x + 3)(4x- 3)arrow_forwardCan you find the values of x,y, and z?arrow_forward.2 y = 4 - x² and x +y = 2.arrow_forward
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