Rationalize the denominator. Assume all variables represent positive real numbers.
A. 
B. 
C. 16
D. -1
Answer: A
Mathematics
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Factor completely. If the polynomial cannot be factored, say it is prime.x4 - 256
A. prime B. (x2 - 16)2 C. (x2 + 16)2 D. (x2 + 16)(x + 4)(x - 4)
Mathematics
Decompose into partial fractions.
A. 
+ 
+ 
B. 
- 
- 
C. 
+ 
- 
D. 
+ 
- 
Mathematics
Give the order of the matrix, and identify the given element of the matrix.
; a12
A. 4 × 2; -13 B. 4 × 2; 9 C. 2 × 4; -13 D. 2 × 4; 9
Mathematics
Find the axis of symmetry of the quadratic function.f(x) = (x + 4)2 - 2
A. x = -4 B. x = 4 C. x = 2 D. x = -2
Mathematics