Question

if x square minus y square equals to 28 and X + Y - 7 then x minus y ka whole square is​

Answer 1

Answer:

Step-by-step explanation:

Given, x+y=7

x^2-y^2=28

(x+y)(x-y)=28                                       [since x^2-y^2=(x+y)(x-y)]

7(x-y)=28                                             [Given, x+y=7]

So, x-y=28/7

      x-y =4

So,

(x-y)^2=4^2

         =16