Simplify the expression. Write the answer with only positive exponents. Assume that all variables represent positive real numbers.

A.
B. -4b47/4
C. -4b45/4
D.

Answer: C

Mathematics

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A. {1} B. {-16} C. {16} D. {0}

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A. -5 B. -5, 5 C. -5, 0, 5 D. 5

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A. 5
B. 4
C. 4
D. 4

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Solve the problem.If f(x) = sin x and f(a) = - , find the exact value of f(a) + f(a - 4?) + f(a - 2?).

A.
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C. - 
D.

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