(a+b)2 and (a-b)2
(a+b)2 = a2 + b2 +2ab
(a-b)2 = a2 + b2 - 2ab
These two are very important formula in algebra . Learn it by heart as they are of extensive use .
(a-b)2 = a2 + b2 - 2ab
These two are very important formula in algebra . Learn it by heart as they are of extensive use .