An expression that occurs in calculus is given. Factor completely.(2x + 1)2 + 3(2x + 1) - 4
A. 2x - 6
B. 2x - 1
C. 2x(2x + 5)
D. 2x(2x + 1)
Answer: C
Mathematics
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Evaluate the expression for the given value or values.x - y + z for x = 25, y = 8, z = 2
A. 15 B. 20 C. 19 D. 35
Mathematics
Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.
(
- 
)
A. 
B. 7
+ 7
C. 8
D. 
- 
Mathematics
Factor by grouping.15x2 - 12x + 10x - 8
A. (5x - 4)(3x - 2) B. (5x + 4)(3x - 2) C. (5x + 4)(3x + 2) D. (5x - 4)(3x + 2)
Mathematics
The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds). s (m)
When is the body moving backward?
A. 8 < t < 9 B. 8 < t ? 10 C. 2 < t < 3, 4 < t < 5, 7 < t < 9 D. 2 < t < 3, 4 < t < 5, 7 < t < 8
Mathematics