$\left(4y^3x-3x^2y\right)^3$

$\int\cos^75dx$

$\left(\frac{3a}{5}-5b\right)\left(\frac{3a}{5}+8b\right)$

$\int_{\sin\left(x\right)}^{\cos\left(x\right)}\frac{1}{\left(1-b^2\right)}db$

$\lim_{x\to0}\left(\frac{\left(x-3\right)^4-81}{x}\right)$

$\int\frac{x^2+2}{x^2+2x+2}dx$

$\sqrt[2]{a^2+2ax+x^2}$