FACTORIZE J1

Factorize 121-9m²

 

Solution

 

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

 

121-9m² = 11²-3²m²       

 

            = 11² - (3m)²       

 

            = (11 - 3m)(11 + 3m)

 

Hence 121-9m² = (11 - 3m)(11 + 3m)  answer

 

 

TRY THIS…………….

 

 

 

Factorize 81 – 49p²