$\frac{36.10^2.27}{6^4.5}$

$\frac{d^2y}{dx^2}\left(x^2y-3x+6\right)\:$

$\left(2u\frac{4}{3}v\frac{2}{3}\right)\left(2v-\frac{3}{2}\right)\left(4v^2\right)$

$\frac{x}{y^{-2}}$

$25x\left\{4\right\}-80x\left\{2\right\}y\left\{2\right\}+81y\left\{4\right\}$

$-x^2-4x+45$

$\left(-2-2^2\right)$