Question

$(y - \frac{x}{10} )(y + \frac{x}{10})$

Answer 1

Heya !!!

This is your answer..

Given :- 
$(y - \frac{x}{10} )(y + \frac{x}{10} )$

Using identity..
(a - b) (a +b ) = a² - b²
So, 
(y - x/10) (y + x/10) = y² - (x/10)²
= y² - x²/100

Hope It Helps