we can actually undsitribute the y
[tex]y( \frac{a}{b}- \frac{b}{a})=a^2-b^2[/tex]
divide both sides by [tex]( \frac{a}{b}- \frac{b}{a})[/tex]
[tex]y= \frac{a^2-b^2}{ \frac{a}{b}- \frac{b}{a} } [/tex]
times the right side by (ab/ab)
[tex]y= \frac{ab(a^2-b^2)}{ a^2- b^2 } [/tex]
y=ab
