Question

a^2-b^2/a^2-2ab+b × (a-b)=

Answer 1

$\frac{a^{2}-b^{2}}{a^{2}-2ab+b^{2}}*(a-b)=\frac{(a-b)(a+b)*(a-b)}{(a-b)^{2} } =a+b$