Respuesta:
[tex](x + {8})^{2} = 0\\ {x}^{2} + 64 \\ x = \sqrt{64 } \\ x = 8[/tex]
[tex](x + 8 {)}^{2} = 0[/tex]
[tex]x + 8 = 0[/tex]
[tex]x = - 8[/tex]
