Answer
$96$
Work Step by Step
Using the laws of exponents, the given expression, $
(8x^{-4})(12x^{4})
,$ is equivalent to
\begin{array}{l}\require{cancel}
(8)(12)x^{-4+4}
\\\\=
96x^{0}
\\\\=
96(1)
\\\\=
96
.\end{array}
For more complicated problems, it is helpful to remember that you can flip the location of numbers with negative exponents. In other words, you can move numbers with a negative exponent that are in the numerator to the denominator, and you can move numbers with a negative exponent in the denominator to the numerator.