$\int\sec\left(\frac{x}{2}\right)dx$
$\left(2b+6\right)\left(2b-20\right)$
$\frac{1-cos^2x}{tanx}=sinx\:cosx$
$\int\left(\frac{y^2}{1-2y^2}\right)dy$
$\int\left(3x\left(x^2+8\right)\right)dx$
$\left(\frac{1}{3}m^2+\frac{3}{2}\right)^2$
$e^{x+y}dx+dy=0$
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