$\frac{z^{-1}}{z^{14}.\:z^{-5}}$

$\sqrt{16a^8b^6c^{10}}$

$-2x+8=18$

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

$5x^3-6x+8x+9x^2-10x^3-5x-x^2$

$\int\left(\frac{n^2}{\left(n^2+4\right)^2}\right)dx$

$-10\left(y+4\right)+8\left(y-1\right)-3\left(y+6\right)$