$\int_0^1\left(8\arctan\:\sqrt{x\:}\right)dx$

$\frac{d}{dx}\left(2x-7\right)^3sin\left(x\right)^{cos\left(x\right)4}$

$\frac{x^4+1x^2-4}{x^2+x+1}$

$\frac{2x-3}{8}-\frac{5x-3}{2}$

$ab^2-30a^2b+25a^4$

$\frac{d}{dx}\left(12x^2+7xy^2=2y^3\right)$

$20\cdot\left(4\cdot10\right)$