2x(x - 2) - (2 - x)^2 = 0, 2x(x - 2) - (2 - x^2) = 0, 2x( x - 2) - ( 2- x)^2 = 0, 2x( x - 2) - ( 2 - x)^2 = 0, 2x(x + 2) - (2 + x)^2 = 0, \( 2x(x-2) - (2-x)^2 = 0