EDGE Math 8

Simplify each expression. Assume that the variables represent nonzero real numbers. Then choose your answer.

1.	$\frac{x^{3} y^{4}}{x y^{2}}$

x^{2} y^{2}

x^{3} y^{2}

x^{4} y^{6}

none of the choices

Answer: $x^{2} y^{2}$

2.	$\frac{3 a^{5} b^{6}}{a^{2} b^{3}}$

\frac{3 b^{3}}{a^{3}}

3 a^{3} b^{3}

\frac{3 a^{3}}{b^{3}}

none of the choices

Answer: $3 a^{3} b^{3}$

3.	$\frac{6 y^{3}}{12 y^{7}}$

\frac{1}{6 y^{4}}

\frac{1}{2 y^{10}}

\frac{1}{2 y^{4}}

none of the choices

Answer: $\frac{1}{2 y^{4}}$

4.	$\frac{p^{- 3}}{p^{- 7}}$

p^{4}

\frac{1}{p^{10}}

p^{10}

none of the choices

Answer: $p^{4}$

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