$\frac{dy}{dx}=\left(-\ln\left(c-e^x\right)\right)$

$tan^{\left(2\right)}\left(y\right)-sin^{\left(2\right)}\left(y\right)=tan^{\left(2\right)}\left(y\right)sin^{\left(2\right)}\left(y\right)$

$4x^4+24x+36$

$\left(\frac{1}{2x+0.5y}\right)^2$

$12^{45}$

$196x^2y^4-225z^{12}$

$\frac{y^2-11y+28}{y-4}$