Simplify the expression. Assume that all variables are positive. ? 

A.
B.
C.
D.


Answer: D

Mathematics

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Find a formula for the nth term of the arithmetic sequence.

A.
B.
C.
D.
E.

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Find the domain of .

A. all real numbers except x = -7 B. all real numbers except x = 49 C. all real numbers except x = 7 D. all real numbers except x = 7 and x = -7 E. all real numbers

Mathematics