Question

$1) frac{a ^{2}-b ^{2} }{a-36} * frac{2a-6} {( a+b )} =$

Answer 1

$frac{a^2-b^2}{a-36} cdot frac{2a-6}{a+b} = frac{(a-b)(a+b)cdot 2(a-3)}{(a-36)(a+b)} = frac{2(a-b)(a-3)}{a-36}$