$20x^2+29x+90$
$\int-30x^2\cos\left(5x^3+2\right)dx$
$7=-7$
$\frac{dy}{dx}=\frac{-4y}{x\left(2+\ln\left(y\right)-\ln\left(x\right)\right)}$
$\frac{2ad^2}{4c}\cdot\frac{6bc^3}{8d}$
$\lim_{x\to1}\left(\frac{1}{lnx}-\frac{x}{x+1}\right)$
$32a^2b-162b^5$
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