Question

specify (a+b)(a-b)-a^2-b^2=???​

Answer 1

(A+b)(a-b)=a²-b²

hope it helps

Answer 2

(a+b)(a-b)=a.a+a(-b)+b.a+b(-b)

=a²-ab+ab-b²

=a²-b²

(a+b)(a-b)=a²-b²