Simplify the expression using the imaginary unit i.- 
A. -10
B. -10i
C. 10i
D. 10
Answer: B
Mathematics
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Evaluate the integral.
A. 
?2 cos 3
B. 
?2 cos 3
C. 
? cos 3
D. 
? cos 3
Mathematics
Find the indicated sum. Find the sum of the first 7 terms in the geometric series 3 + 9 + 27 + . . .
A. 1122 B. 3279 C. 9840 D. 1092
Mathematics
Write the expression in the standard form a + bi.(1 + i)3
A. 2 + 2i B. -2 + 2i C. -2 + i D. -2 - 2i
Mathematics
Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 1
Mathematics