Question

(a - b)(a - b) is equal to:
(a) (a - b)^2
(b)(a + b)
(c) a^2 – b^2
(d) None of these​

Answer 1

Opetion A

is correct Answer

Answer 2

Answer:

(a-b) (a-b)

= a² - ab - ab + b²

= a² + b² - 2ab

which is nothing but,

(a) (a-b)²