expressing any number as difference of two squares (Std VII)

Express 17 as difference of two squares.

Answer:

{(a+b)/2}² - {(a-b)/2}²  =   ab 

Substitute “a” = 17 and “b” = 1

Therefore, the above equation becomes

{(17+1)/2}² - {(17-1)/2}²  =17x1

Or  9² - 8²  = 17

Now using the same formula can you express 18 as difference of 2 squares


those who read this also read