$\int\frac{x^3}{\sqrt{9-4x^2}}dx$
$5^5\:\cdot\:5^3\:\cdot\:5^7$
$-7z^6+4z^6$
$\left(x^2+4\right)\left(2r-7\right)$
$\frac{x-8}{11}=7$
$45\cdot46$
$-0.25x^2+2x+11$
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