$\lim_{x\to0}\left(4\left(\sin\left(x\right)^{\tan\left(x\right)}\right)\right)$

$\left(6a+4b-8c\right)^2$

$3\sec^3\left(x\right)-4\sec\left(x\right)$

$\int40x\left(10x^4-2\right)dx$

$\int2x\left(x^2+1\right)^{10}dx$

$\frac{dy}{dx}=\frac{-8x+5}{2y^2+1}$

$\frac{4x^2-x+2}{2x+2}$