$( 14 x ^ { 4 } - 7 x ^ { 3 } + ( 7 x )$
$2+x<\frac{z}{9-x^{5}}$
$\frac{dy}{dx}=\frac{3x^2+cos\left(x\right)}{4+e^y+3y^2}$
$\int\frac{\sqrt{x^2+2}}{x}dx$
$\frac{x}{2}=-6$
$\left(u+15\right)\left(u-3\right)$
$80x^5-60x^3+192x^2+408x$
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