$x^2+6x-133$
$-\sin\left(x\right)^2-2\cos\left(x\right)^2$
$\frac{x^2+x-12}{x-3}$
$-2x-y+10-x+7y-5$
$y^2=\left(x^2-4\right)^3$
$\int\left(\frac{e^{2x}}{\sqrt[4]{e^x\:+\:1}}\right)dx$
$\frac{7x}{12}-\frac{5}{4}=\frac{3x}{5}-\frac{2}{3}$
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