$\left(6x-y^2\right)^2$

$8x=4x^2-1$

$\left(4-5x^2\right)\left(3-2x+6x^2\right)$

$\frac{\csc\left(x\right)}{1}-\frac{1}{\cos^2\left(x\right)}=\frac{\csc\left(x\right)}{1+\sin\left(x\right)}$

$x2y\:+\:xy2$

$\frac{dy}{dx}=\left(\frac{2cos\:2x\left(e^{-3y}+7\right)}{21\left(1+sin2x\right)}\right)$

$\int\left(\frac{\left(1\right)}{\sqrt{2x+1}}\right)dx$