The given expression simplifies to:
[tex]\frac{(a^2 - b^2)(-a)}{ab}[/tex][tex]\frac{-a^3 + ab^2}{ab}[/tex][tex]-a^2 + b[/tex]
The given expression simplifies to:
[tex]\frac{(a^2 - b^2)(-a)}{ab}[/tex]
[tex]\frac{-a^3 + ab^2}{ab}[/tex]
[tex]-a^2 + b[/tex]