Simplify the expression. Assume that all variables are positive when they appear.(
+ 
)(
- 
)
A. 15
B. 13 - 2
C. 13 - 2
D. 11
Answer: D
Mathematics
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Evaluate the polynomial for the given value.-6x + 9; x = 2
A. -21 B. -3 C. 3 D. -24
Mathematics
Fill in the blank with one of the words or phrases listed below.
The 20 above is called the 
.
A. addend B. difference C. minuend D. subtrahend
Mathematics
For the given functions f and g, find the requested composite function.f(x) = 
, g(x) = 4x + 3;
Find (g ? f)(x).
A. x
B. x - 
C. x + 6
D. 4x + 9
Mathematics
Prove the identity.
+ 
= 
What will be an ideal response?
Mathematics