$-36=8x+4$
$\tan^2x\sin^2x$
$\frac{2\sin\left(x\right)\cos\left(x\right)}{1-2\sin^2\left(x\right)}=\tan\left(2x\right)$
$\int\frac{x^2+1}{\left(x-1\right)\left(x^2+9\right)}dx$
$-12\left(-12\right)\left(-2\right)$
$\left(\sqrt{10}-3\right)\left(\sqrt{10}+3\right)$
$\frac{3\left(x+4\right)}{6}-\frac{x-2}{5}=\frac{3}{10}\left(x+8\right)$
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