$\int\frac{1}{1-2\sqrt[2]{x}}dx$

$\left(8\right)\left(-14\right)$

$\int_0^1\left(1-\sqrt{x}\right)^2dx$

$\frac{1}{\left(5x\right)^{-\frac{5}{2}}}$

$f\left(x\right)=\frac{6}{x^2-2x-8}$

$\frac{\cos\left(90-x\right)\cos\left(x\right)}{\cot\left(x\right)}$

$\lim_{x\to0}\left(\frac{cosx-1}{\left(x-\pi\right)^2}\right)$