$\int36x\cdot e^{-6x}dx$
$\left(3x^3+2x^2-x\right):\left(x+2\right)$
$\left(\frac{1}{2}a-\frac{3}{5}b\right)\left(\frac{1}{4}a^2+\frac{3}{10}ab+\frac{9}{25}b^2\right)$
$\frac{\left(n+1\right)}{3^n}\left(x-2\right)^n$
$\left[\frac{\sqrt[3]{27a\:}\:\sqrt{b^{-3}\:a^{-\frac{1}{3\:}}\:b}}{\sqrt{b^{-1}}\sqrt{16a^2}}\right]^{-1}$
$\:-12-\left(-13.2\right)+\left(-23\right)+63-47$
$\cos\left(x\right)-\sqrt{\cot^2\left(x\right)-\cos^2\left(x\right)}$
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