Question

Factorise the following:

(a + 8)² – (b + 5)²

Answer 1

Given (a + 8)² – (b + 5)²

We know that,

(a + b) (a – b) = a² – b²

Hence,

⇒ (a + 8 + b + 5) (a + 8 – b – 5)

⇒ (a + b + 13) (a – b + 3)