$\cos\left(2x\right)+\sin\left(x\right)=4\sin^2\left(x\right)$

$\left[1+\left(6-9\right)\right]-\left(8-12\right)$

$\left(8x^2-9m^3\right)^2$

$\lim_{x\to-4}\left(\frac{-3x^2+4}{x+4}\right)$

$\int\frac{3}{\left(x^4+x^2\right)}dx$

$\int x^3\sqrt{x+9}dx$

$2w^{3}-8x-5w^{3}-10x-2xy^{3}$