$\left(x-5\right)^2-\left(y-1\right)^2$

$\frac{\left(1-x^2\right)}{\left(3+x\right)}$

$\left(4x^my-\frac{3}{4}\right).\:\left(4x^my+\frac{2}{5}\right)$

$\frac{16^2}{n}$

$\frac{\left(2\right)}{\left(-1^3\right)}$

$\left(x+y\right)^3+3\left(x+y\right)-\left(x\right)^3+3\left(x\right)$

$\frac{dy}{dx}\left(x^3y^2-8x^2y+x=4\right)$