$\int\frac{x^3+x}{x^2}dx$
$25b^3+10b^2$
$\frac{5x^4-2x^2-3}{-2x^3+x-1}$
$\frac{x^3+3x^2-18x-40}{x+5}\:$
$7sec^3\left(x\right)-7sec^2\left(x\right)-7sec\left(x\right)+7$
$\frac{\infty\:+1}{e^{\infty\:}}$
$\left(x+2\right)\left(x+0.75\right)$
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