Write the expression in the standard form a + bi.If z = 9 + 3i and w = -7 + i, evaluate 
.
A. 2 + 4i
B. 16 + 2i
C. 16 - 2i
D. -16 - 2i
Answer: C
Mathematics
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Simplify the expression. Assume that all variables are positive and write your answer in radical notation.
? 
A. ab
B. ab
C. 
D. 
Mathematics
Determine algebraically whether the function is even, odd, or neither.
A. even B. odd C. neither
Mathematics
Factor.x2 - 12x + 144
A. (x + 12)2 B. (x + 12)(x - 12) C. Prime D. (x - 12)2
Mathematics
Suppose you are taking a true-false test with ten questions. If you guess at the answers on this test, find the probability of getting fewer than nine correct answers. ?
A. 0.9944 B. 0.9928 C. 0.9868 D. 0.9935 E. 0.9893
Mathematics