Respuesta :

x^2 -y^2 = 121

( x-y)( x+y) = 121

-11( x-y) = 121

x- y = -11

BasketballEinstein

Answer:

[tex] -11 = x - y[/tex]

Step-by-step explanation:

[tex]121 = {x}^{2} - {y}^{2} \\ \\ 121 = [x - y][x + y] \\ \\ 121 = [x - y][-11] \\ \\ -11 = x - y[/tex]

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