Write the expression in the standard form a + bi.(
+ i)5
A. -16
+ 16i
B. 16 - 16
i
C. 9
+ 5i
D. 16
- 16i
Answer: A
Mathematics
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A. 
B. 
C. 5u
D. 
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Find all complex-number solutions by completing the square.y2 - 4y = -28
A. -2 ± 2i
B. 2 ± 2
C. 2 ± 2i
D. 2 ± i
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Approximate the number using a calculator. Round the answer to three decimal places.4-2.2
A. -8.800 B. 0.047 C. 23.426 D. 0.347
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Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(x3y-1)7
A. x21y7
B. 
C. 
D. 
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