Simplify the expression. Use only positive exponents.
(
x
4
)
7
(
x
2
)
−
9
\displaystyle \frac{{\left({x}^{{4}}\right)}^{{7}}}{{\left({x}^{{2}}\right)}^{{-{{9}}}}}
(
x
2
)
−
9
(
x
4
)
7
=
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\displaystyle