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

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

$\left(x^2+2x-3\right)\left(-2x^2-5x-4\right)+7x+44$

$\left(3n+1\right)\left(n+1\right)$

$\int x\left(2x^2-6x+\frac{3}{x^2+1}\right)dx$

$-\left(14-7x\right)$

$\frac{1}{d^2-12d-36}\left(2x^2-5x+9\right)$