FACTORIZE J2

 

Factorize 121-9m⁴

 

Solution

 

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

 

121-9m⁴ = 11²-3²(m²)²   [since 121and 9 are perfect squares]    

 

            = 11² - (3m²)²       

 

            = (11 - 3m²)(11 + 3m²)

 

Hence 121-9m⁴ = (11 - 3m²)(11 + 3m²)  answer

 

 

TRY THIS…………….

 

 

 

Factorize 25 – 49p⁴