$x\left(x+3\right)^3$

$\left(r+x^2\right)^2$

$\int_0^{25}\left(\pi\left(x^{\frac{1}{2}}\right)\right)dx$

$\int_0^e\left(x^3\ln^4\left(2x+3\right)\right)dx$

$\lim_{x\to1}\:\frac{\left(1+2x\right)}{2x^2-2x}$

$-\frac{100}{-5}$

$\frac{\left(2x^{-4}y^7\right)^4}{4x^{-1}y^{20}}$