Question

Ayuda con esta expresión algebraica!

Answer 1

$x^{3}+ y^{3}=(x-y)( x^{2} +xy+ y^{2})$
$\frac{(x-y)( x^{2} +xy+ y^{2})}{( x^{2} - y^{2} )( x^{2} +xy+ y^{2})}$
$\frac{(x-y)}{( x^{2} - y^{2}) }$
$\frac{(x-y)}{(x-y)(x+y)}$
$\frac{1}{(x+y)}$