$-4^2-\left(-3\right)^2$
$\int t^2\:dx$
$-\left(3+4+\right)\left(4+7\right)+4-9$
$\frac{1}{y^2}y'\:=-\frac{x}{e^x}$
$4x-4>-8$
$\lim_{x\to0}\left(\frac{2^{\left(x^2\right)}}{x^{\left(\frac{5}{2}\right)}}\right)$
$\sin x+\left(\cot x+\tan x\right)$
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