Question

Express the following as in the form of (a+b)(a-b)

1) a2-64

Answer 1

Answer:

(a)square- (8) square

=](a+8) (a-8) is in the form (a+b) (a-b)

Answer 2

Put identity
a^2-b^2
So
a^2-8^2
(a+8)(a-8)