Question

$$\frac{ x-2y }{ { x }^{ 2 } +2xy+4 { y }^{ 2 } }$$

Evaluate

$\frac{x-2y}{x^{2}+2xy+4y^{2}}$

Expand

$\frac{x-2y}{x^{2}+2xy+4y^{2}}$