$\frac{d^2}{dx^2}\left(5x^3-2x^2+6\right)$

$-44x^3+15x^3$

$\left(9-4x^2\right)+\left(3+2x\right)$

$\int\left(3\ln\left(x^2\right)\right)dx$

$xsin\left(\frac{y}{x}\right)\frac{dy}{dx}=ysin\left(\frac{y}{x}\right)-x$

$\left(\frac{8a^5b^{-2}c}{10a^{-3}b^4}\right)^3\left(\frac{15a^{10}}{4y^{-3}}\right)^{-3}$

$\int\:\left(3\left(x^3+2\right)^7\:x^2\right)dx$