Question

which of the following is an identity.
(a) (a - b)^2 = a^2 + 2ab - b^2
(b) (a - b)^2 = a^2 + b^2 + 2ab
(c) (a - b)^2 = a^2 - b^2
(d) (a + b)^2 = a^2 - 2ab - b^2

Answer with explanation​

Answer 1

Answer:

option (D) (a+b)^2=a^2-2ab-b^2