$m^4-4m^4n+4m^4n^2$

$\left(xy^2\right)\frac{1}{3}\left(x^5y^{-2}z-6\right)\frac{-2}{3}$

$\frac{10^3}{2^3}$

$\frac{1}{5^{-2}}$

$\int\frac{\left(7x+9\right)}{\left(14x^2+36x\right)^5}dx$

$x-7=1$

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