$\frac{\csc^2x+\sec^2x}{\tan x+\cot x}$
$600+952$
$\int\:5x^6cos4x\:dx$
$\frac{dy}{dx}\left(sin4x\right)^{9x}$
$\frac{a^2+b^2+c^2}{2ab+2ac+2bc}$
$\left(7a^{-2}b^3\right)x\left(6ab^2\right)$
$\left(2^2\right)^3\:x\:2^{-8}$
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