Best of all, Identity definition in math is free to use, so there's no reason not to give it a try!

Solve NowIdentity 1: (a+b) 2 = a 2 + b 2 + 2ab. Identity 2: (a-b) 2 = a 2 + b 2 – 2ab. Identity 3: a 2 – b 2 = (a+b) (a-b)

An identity element is a number that, when used in an operation with another number, results in the same number. The additive and multiplicative identities are two of the earliest identity