$\int\sin^7\:2x\:dx$
$3x^2+2x+\frac{-8}{x}+2$
$\csc^2m+\frac{1}{\tan^2m}$
$x^8-2x^7-x^6$
$\left(2x-5y^3+4\right)^2$
$xy^2-xz^2=-4-mx^2$
$4\left(5w-11\right)^2-25\left(w+3\right)^2$
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