The value of ( a + b )^2 ( a^2 - b^2 ) is\, = ?

Answer: Option C

$$\begin{array}{rl}& \frac{{\left(a+b\right)}^2}{\left(a^2-b^2\right)}\\ & =\frac{\left(a+b\right)\left(a+b\right)}{\left(a+b\right)\left(a-b\right)}\\ & =\frac{a+b}{a-b}\end{array}$$