$\frac{1}{\sqrt{1-\cos^2\left(x\right)}}=\csc\left(x\right)$
$-30-\left(-8\right)$
$2x^2+x+4x+2$
$2 ( - 2 - 4 p ) + 2 ( - 2 p - 1 )$
$5\sqrt{6}.4\sqrt{8}$
$\frac{1+y}{1-y}dy=x^2dx$
$\int v^{\frac{-8}{9}}dv$
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