$\tan2\cdot85.22$
$e^{-x}y'=3x^2y^3$
$\left(6e-6r\right)\left(2e-9r\right)$
$\frac{1}{3}x^2+\frac{3}{2}x-56=0$
$\frac{dy}{dx}\left(\:y\:=\sqrt{\:x^2\:+\:31}\right)$
$16x^2+16x+42x^2$
$25p^4+40p^2+16$
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