Simplify.
A. 
B. 
C. 1
D. -1
Answer: D
Mathematics
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Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Mathematics
Find those values of x for which the given function is increasing and those values of x for which it is decreasing.y = x4 - 8
A. Increasing for -2 < x < 2, decreasing for x < -2, x > 2 B. Increasing for -2 < x < 0, x > 2, decreasing for x < -2, 0 < x < 2 C. Increasing for x < -2, x > 2, decreasing for -2 < x < 2 D. Increasing for x < -2, 0 < x < 2, decreasing for -2 < x < 0, x > 2
Mathematics
Use substitution to factor the polynomial.25z4 + 5z2 - 6
A. (5z2 + 2)(5z2 - 3) B. (5z4 + 3)(5z - 2) C. (5z2 + 3)(5z2 - 2) D. (5z4 + 2)(5z - 3)
Mathematics
Use a graphing utility to graph the inequality.2x + y - 3 ? 0
A. 
B. 
C. 
D. 
Mathematics