$\int_0^{2\pi}\left(\frac{cosx}{\sqrt{1+sinx}}\right)dx$

$\sqrt{\frac{1}{x^3}}-\frac{2}{x^4}$

$2m-3n-\left|-3n+2n\right|$

$\frac{6}{4a^3b^2}+\frac{7}{10a^2b^4}-\frac{2}{5a^3b}$

$\int_0^5\ln\left(x\right)dx$

$2\left(3n+7\right)-\left(2+n\right)$

$\left(y^3-7\right)\left(y^4-4\right)$