$\sqrt[m]{\sqrt[4m]{x^{8m}\cdot y^{4m}}}$

$\int\frac{\log\left(4t\right)}{t\left(ln\left(4t\right)\right)}dt$

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

$m^2+6mn+9n^2$

$c^8.c^3=c^4.c^x$

$x^2-8x-12$

$\left(7x+3x^2\right)^2$