Question

Need help with this.

Answer 1

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 !