$\frac{\left(x^6+x^3-6\right)}{x+1}$

$\frac{\left(10x\right)^2-29x-21}{2x+3}$

$\int_0^{\infty}\left(\frac{\left(5x-3\right)^3}{x^3}\right)dx$

$-4-9-2+8+4+3-1$

$\left(\frac{3n^3h^5}{6nh^4}\right)^2$

$\left(a+b\right)^2+\left(a-b\right)\left(a+b\right)$

$\frac{dy}{dx}=\frac{x}{9y}$