$\left(2n+2\right)\left(2n+1\right)$

$\lim_{x\to60}\left(\sin\left(2x\right)\sin\left(x\right)-\cos\left(x\right)\right)$

$\left[\left(n+2\right)\left(n-2\right)\left(n^2+4\right)\right]$

$10cos\left(x\right)^2+11cos\left(x\right)+3=0$

$0.25\left(\frac{8}{9}+\frac{1}{2}\right)$

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

$a^8x^2-b^6$