Question

3. Evaluate the following.
(a) (a + b)(a - b)
(b) (a + b)(a - b)(a2-b2)

(c) (a + b) (a - b) (a2- b2)(a2 + b2)​

Answer 1

Answer:

(a) (a+b)(a-b) =a×a-b×-b=a2-b2

Answer 2

Answer:

(a) (a + b)(a - b)

==> a^2 - b^2