$9j^2-6j+1$
$\cos\left(x\right)\cdot\sec\left(x\right)+\cot\left(x\right)\cdot\cot\:\left(x\right)$
$xy^0\left(x^2y^7-y^2+x^{-6}y^{-9}z+3\right)$
$4.85\cdot10$
$\int\frac{e^{5m}}{2}dm$
$5x^4-3x^3+7x^2-4;\:x=0$
$\frac{x^3+2}{x^2-1}$
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