EDGE Math 8

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

1.	$5^{2} \cdot 5^{2}$

100

625

none of the choices

Answer: 625

2.	$b^{6} \cdot b^{7}$

b^{42}

b^{13}

b

none of the choices

Answer: $b^{13}$

3.	${(y^{3})}^{5}$

y^{15}

y^{8}

y^{2}

none of the choices

Answer: $y^{15}$

4.	${(s t)}^{5}$

s t^{5}

s^{5} t^{5}

5 s t

none of the choices

Answer: $s^{5} t^{5}$

5.	$\frac{p^{8}}{p^{2}}$

p^{6}

p^{4}

\frac{1}{p^{6}}

none of the choices

Answer: $p^{6}$

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