$\int\left(\frac{\left(7x\right)}{\left(7x^2+4\right)}\right)dx$
$-\int xe^{-x}dx$
$2\:-\:31\:+\:89\:+\:-39\:-\:8$
$\cos\left(\frac{\pi}{2}-x\right)\csc\left(x\right)$
$3m^2-7x^2y+3my-7mx^2$
$\sqrt[5]{25^{4x+1}}=\sqrt[4]{125^{2x+2}}$
$y'=8+2x-3x^2$
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