$\int\frac{18}{\left(x^2+2x-8\right)}dx$

$\int_{\frac{3\pi}{2}}^{\frac{\pi}{2}}\left(2\cos\left(x\right)+2\right)\left(2\cos\left(x\right)\right)dx$

$\int_1^3\left(5e^y\right)dx$

$w^6-y^6$

$x-\frac{ax-ay+z}{1+2a^2}$

$\frac{3x^3-5x^2+10x-3}{3x+1}$

$\left(x^5y^1\right)^4$