Question

0
(a - b)(a + b) - (a + b)(a + b)​

Answer 1

(a - b) ( a + b)- (a +b) (a+b)

a^2-b^2-{a^2 +2ab +b^2}

a^2-b^2-a^2-2ab-b^2

-2ab-2b^2

Answer 2

Answer:

(a^2-b^2)--(a+b)^2=0

(a^2-b^2)-(a^2+b^2+2ab)=0

a^2-b^2-a^2-b^2-2ab

-2b^2=2ab

-2b=2a

-b=a