$\frac{4x^2}{2-2\cos\left(x\right)}$
$3e^{x+1}=13$
$20+90+51+12+10+35+20+80+15+50$
$\left(x^2+\frac{1}{x}\right)^n$
$\frac{x+4}{x-2}=0$
$\lim x->2\left(\frac{x^2-4}{x+2}\right)$
$\left(2y^2\right)^1$
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