$2m+2y+3xm+3xy$
$9u+5=5\left(u-3\right)$
$2\left(-13\right)+19-7$
$\cos\left(x\right)\left(\tan\left(x\right)+1\right)=1$
$\lim_{x\to\infty}\left(cos\left(0.96^x\right)\right)$
$\left(6x-5\right)\left(6x-20\right)$
$\frac{dx}{dx}=ax+b$
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