$\sqrt{-89}$
$\lim_{x\to\frac{\pi}{2}}\left(6\cos\left(3x\right)\sec\left(7x\right)\right)$
$\left(y^3-5\right)\cdot\left(y^3+5\right)$
$2x\frac{dy}{dx}=\frac{3}{y}+y$
$12+2+24$
$5-3z=-2z+5-z$
$\int\:3x^2\:e^x\:dx$
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