For 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 = 0

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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For 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 = 0
Transcribed Image Text:For 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 = 0
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