$y\:=2x^2-13x+5$
$2x^4+10x^3+12x^2-8x-16$
$10x^2+22x+12$
$\int\frac{2}{x\left(x+1\right)\left(x+2\right)}dx$
$-2^2-\left(-9\right)+4\cdot3$
$\frac{dy}{dx}+\frac{2}{3}y=1-\frac{1}{2}t$
$\left(secx+cscx\right)^2$
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