$\frac{dy}{dx}=\frac{2xcos^2\left(x\right)-ysin\left(x\right)}{cos\left(x\right)}$

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

$\sqrt{3}\csc x-2=0$

$\left(5a^3b^2-4a^2b^2\right)^2$

$\int\frac{4x^2+2x}{\left(x-2\right)\left(x^2+1\right)}dx$

$\left(\frac{5}{4}m^5n^2\right)\left(-\frac{8}{9}m^2n^4l^3\right)$

$\lim_{x\to-1}\left(\frac{b^{x+1}}{x+1}\right)ln\left(ab\right)$