FACTORIZE G9

 

Factorize 121-25m²

 

Solution

 

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

 

121-25m² = 11²-5²m²       

 

            = 11² - (5m)²       

 

            = (11 - 5m)(11 + 5m)

 

Hence 121-25m² = (11 - 5m)(11 + 5m)  answer

 

 

TRY THIS…………….

 

 

 

Factorize 64 – 49y²