$7x^4-28x^3+21x^2+28x-28$
$\frac{x^5+x^4+2x+3}{x-1}$
$\left(3-x\right)\left(-1-x\right)\left(-5-x\right)$
$\int\frac{3x+11}{x^2\:-x\:-\:6}dx$
$\left(2a^4-3b^2\right)^2$
$\int\left(t-2\right)^2e^{-st}\:dt$
$cosx+sinxtanx=\sqrt{2}$
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