$\left(w-7\right)\left(w-5\right)$
$5\:\cdot\:-3\:+\:-2\:\cdot\:9$
$16+\sqrt{x}^2$
$\frac{1}{1}+\left(\frac{1}{\sqrt[3]{x^2}}\right)$
$\frac{1}{\tan\left(2x\right)+\cot\left(2x\right)}=\frac{1}{2}\sin\left(4x\right)$
$\int\frac{x^2-1}{x\left(x+1\right)}dx$
$36a^8-144z^2$
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