Simplify: a2−b2a+b\dfrac{a^2 - b^2}{a + b}a+ba2−b2 for a≠−ba \neq -ba=−b.
a−ba - ba−b
a+ba + ba+b
(a−b)2(a-b)^2(a−b)2
a2−ba^2 - ba2−b