A(a+5b)-(a+b)(a-b) упростите плиз ^_^

Question

A(a+5b)-(a+b)(a-b) упростите плиз ^_^

Answer 1

а²+5аb-a²+b² = 5ab+b²

Answer 2

a(a+5b)-(a+b)(a-b) = a^2 + 5ab - a^2 + b^2 = b^2 + 5ab