$xy=x^2+x+y$

$\frac{15x+7\left(x-1\right)}{21}+30=\frac{2\left(x-4\right)+15x}{3}$

$f\left(x\right)=\frac{\left(x\left(x^2-9\right)^2\right)}{x-2}$

$\left(w-2y\right)\left(y+2w\right)$

$\left(m+\frac{1}{3}y\right)^3$

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

$5.5-0.5$