Posted by **Lulu** on Tuesday, December 25, 2012 at 3:15am.

I'm studying to take a math placement exam and it has been a long time since I've taken a math class. Can someone please give me a step to step solution of these:

A.Simplify:

8x/[2^(x-1)] Answer = 2^(2x+1)

B.Simplify:

(2^x)*[4^(x-1)] Answer = 2^(3x-2)

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