Respuesta :

Answer:

x=-8

Step-by-step explanation:

square root 64 which is 8

-8^2 = -64

-64 -64 = 0

-8^2 + 64 = 0

Answer:

x=8

=>x^{2} =-64\\

=>  \sqrt{x^{2} } =\sqrt{64} \\\\

=> x=8

Step-by-step explanation: