$\frac{x^3+2x^2+4x^1+2}{x^2}$
$2-78$
$-6\left(9\right)$
$x^3-4x^2-x$
$\left(2xy^2+2y\right)dx+\left(2x^2y+2x\right)dy=0$
$\left(2x+2\right)^2\:\left(2x-1\right)$
$\frac{sin\theta\:}{cot\theta\:}+sin\theta\:\:cot\theta\:\:=\:sec\theta\:$
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