If x + y = 5 and $x^2 + y^2 = 17$ then the value of $(x-y)^2$ is equal to :

9 4 25 16

9

If x + y = 5 $x^2 + y^2 = 17$ then the value of $(x-y)^2$ = ? Put the value of, x = 4 and y = 1, it satisfies the condition given in the question. (x - y)2 = (4 - 1)2 = 9