$\int\frac{x^2+2}{\sqrt{9-x^2}}dx$
$64x^2-48x+9$
$\left(8\sqrt[3]{a^2}b\right)\left(4\sqrt{ab^3}\right)$
$6u+14$
$2\left(3a-4b\right)$
$\left(14d-8\right)^2$
$5x+4-2x$
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