$\sqrt{\frac{x^8}{y^6}}$

$\ln\left(x+63\right)-\ln\left(4-3x\right)=6\ln\left(2\right)$

$14y\:-\:8\:-\:10y$

$\sqrt{\ln\left(e^{6x}\right)+39}-2\:=\:e^{\ln\left(x\right)}$

$\left(1+\cos^2\left(x\right)\right)\cdot\tan^2\left(x\right)-\frac{1}{\cos^2\left(x\right)}$

$\int\sin^2\left(2t\right)\cos^3\left(2t\right)dt$

$4w-2z^2$