FACTORIZING-3

Factorize 1 - 225m²

Solution

We use difference of two squares a² – b² = (a - b)(a + b)

1 - 225m² = 1² - 15²m²       

                = 1² – (15m)²       

                = (1 - 15m)(1 + 15m)

Hence 1 - 225m² = (1 - 15m)(1 + 15m) answer

TRY THIS…………….

Factorize 1 – 121c²