$\frac{d^5}{dx^5}\left(9x^2+6x-10\right)$

$\left(-5a^nb^m\right)\left(-9a^{n+2}b^{m-2}\right)$

$35.664+41.11862$

$\int\:\frac{x^2-6x+9}{\sqrt{x^2-6x+18}}dx$

$\int\frac{\left(2x^2-x-6\right)}{\left(x-1\right)\left(x^2+4\right)}dx$

$\left(xy-3y+x-3\right)dy=\left(xy+y-2x-2\right)dx$

$\frac{a^3}{a^5}$