Simplify.

A. ± 
B. - 
C. 0
D.


Answer: D

Mathematics

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Find an antiderivative of the given function.cos ?x + 7 sin 

A.  sin ?x - 49 cos 
B. -sin ?x - 49 cos 
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Simplify the expression. Assume all variables represent positive real numbers.

A. 9xy 
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Find the first six terms of the sequence.a1 = 8, a2 = 8; for n ? 3, an = an-1 + an-2

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Mathematics