# How do you evaluate x^-3 for x=2?

$\frac{1}{8}$
$\text{using the "color(blue)"law of exponents}$
•color(white)(x)a^-mhArr1/a^m
$\Rightarrow {2}^{-} 3 = \frac{1}{2} ^ 3 = \frac{1}{8}$