FACTORIZE J2

 

Evaluate using factors: 996² – 986²

 

Solution

 

We apply difference of two squares: a² - b² = (a+b)(a-b)

 

996² – 986²  = (996 + 986)( 996 – 986)

 

                   = (1982)( 10)

 

                   = 19820   [only add a zero at 1982]

 

996² – 986² = 19820

 

TRY THIS…………….

 

Evaluate using factors: 708² – 608²