Question

$$( { x }^{ 2 } + { y }^{ 2 } )/( { x }^{ 3 } + { y }^{ 3 } )$$

Evaluate

$\frac{x^{2}+y^{2}}{x^{3}+y^{3}}$

Expand

$\frac{x^{2}+y^{2}}{x^{3}+y^{3}}$