$2abc-5ab^2+3a^2c+8ac$

$\frac{d}{dx}\:xy^2+4y^3+3x=0$

$\frac{d^2}{dx^2}\sec\left(5x\right)$

$\left(-25\right)\:+\:\left(-49\right)\:-\:\left(-88\right)\:+\:\left(-36\right)$

$\frac{dy}{dx}+6y=5cos\:3x$

$\lim_{x\to\infty}\left(x^{10^{10}}-e^{-x}\right)$

$32c^4+28c^3$