Answer
$x^{5}$
Work Step by Step
Use the negative exponent rule ($x^{-y}$ = $\frac{1}{x^{y}}$) to bring the -4 above the fraction line.
Then, use the exponent product rule ($x^{y}$ $\times$ $x^{z}$ = $x^{y+z}$) to combine the x's.
$x^{1}$ $\times$ $x^{4}$ = $x^{5}$
