$x^{15}+\frac{y^{15}}{x^3+y^3}$

$\left(9x-11m\right)\left(9x-11m\right)\left(x+m\right)$

$\left(7x^2+6x+x^3+4\right)\left(x+3\right)$

$\int x^2\:\left(x^3-10\right)^{10}\:\:dx$

$4x^4+21x^3+7x^2+18x+40$

$\int\frac{\left(4x-3\right)}{x^2\left(x-2\right)}dx$

$\lim_{x\to0}\left(\frac{28}{x}-\frac{28}{e^x-1}\right)$