$5x^3y^2\cdot2x^3$
$\left(+3\right)-\left(-6\right)+\left(-2\right)$
$\frac{\tan\left(x\right)}{\cot\left(x\right)}-\frac{\cot\left(x\right)}{\tan\left(x\right)}$
$\frac{6x^2-33x-120}{3}$
$3x^2+18x+15$
$\lim_{x\to2}\left(\frac{4x-8}{x^2-4}\right)$
$4+6+7+190$
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