$x=\frac{\left(n+1\right)^2\left(\left(n+1\right)^4-1\right)}{n^2\left(n^4-1\right)}$

$\int4xe^{2x+7}dx$

$\frac{d^2}{dx^2}\left(\left(3x-2\right)\right)$

$\int\left(e^x\sqrt{31+e^x}\right)dx$

$\left(4\right)\left(-4\right)\left(-2\right)\left(5\right)$

$\frac{dy}{dx}=3y+e^{3x}$

$\left(\sin\left(a\right)-\cos\left(a\right)\right)^2$