Question

Factorise : a^2 - 64 ​

Answer 1

Factorise : a^2 - 64

a² - 64

(a)² - (8)²

(a-8) (a+8)

Identity used : a² - b² = (a+b) (a-b)

Hence, the answer is (a-8) (a+8).

Answer 2

Step-by-step explanation:

a²-64

= (a)²-(8)²

= (a+8)(a-8)