Question

Which of the following is correct?

Options:

(a) `(a – b)^2 = a^2 + 2ab – b^2`

(b) `(a – b)^2 = a^2 – 2ab + b^2`

(c) `(a – b)^2 = a^2 – b^2`

(d) `(a + b)^2 = a^2 + 2ab – b^2`