Simplifying

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Apr 1st 2013, 05:07 AM
Mr Rayon

Simplifying

Simplify the following $\frac{ 2^-3(y-2)^5(y^2z)^3}{(25z^4)^{1/2}x^{-3}(y-2)^3}$ . Any help would be much appreciated!
Apr 1st 2013, 05:30 AM
HallsofIvy

Re: Simplifying

Who ever gave you this problem clearly expects you to know the "laws of exponents" (also called "index laws").

$a^xa^y= a^{x+y}$
$\frac{a^x}{a^y}= a^{x- y}$
$(a^x)^y= a^{xy}$

Use those to combine powers of the same base.

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