Answer
a.
$x^{-2}$
b.
$w^{-1}$
c.
$y^{3}$
Work Step by Step
a.
$x^{-5}x^{3} = x^{-5+3} = x^{-2}$
b.
$w^{-2}w^{-4}w^{5} = w^{-2-4+5}=w^{-1}$
c.
$\frac{y^{10}y^{0}}{y^{7}} = y^{10+0-7} =y^{3}$
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