Need help with this.
You have x^2 - 16 = 1 + 2x + x^2 ;-17 = 2x ;x = - 17 / 2 = - 8.5 ;\(\sqrt{ ( - 8.5)^{2} - 16 }\) = 1 + ( - 8.5 ) ;2.12 = -7.5 False !There is no solution !