$a^3b+2a^2b-35ab$
$\frac{1-\cos\left(x\right)^2}{1-\:cos\left(x\right)}=1+cos\left(x\right)$
$\sin30\:\frac{1}{2}$
$\lim_{x\to\infty}\left(\frac{2x+2}{x-2}\right)$
$\frac{dx}{dt}=\frac{x}{t-2}+\ln\left(t-2\right)$
$9f-972$
$\sqrt[3]{a^3-3ab^2\left(a-b\right)-b^3+\left(a+b\right)}$
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