$2x\:+\:10\:=\:x\:+1$
$\lim_{y\to0}\left(\frac{y^2+y-20}{\sqrt{32-y^2}-y}\right)$
$\int\left(-5\csc^2x\right)dx$
$\cos\left(\infty+\frac{\pi}{2}\right)=-\sin\left(\infty\right)$
$y=\left(\frac{4}{x}+1\right)\left(x^2-2x+3\right)$
$10-4\left(2x+7\right)$
$7.9-12$
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