Respuesta :

[tex]100x^2 = 64[/tex]
[tex]x^2 = \frac{64}{100}[/tex] <-- Divide both sides by 100
[tex]x = \frac{8}{10}[/tex] <-- Take the square root of both sides
[tex]x = \frac{4}{5}[/tex] <-- Simplify.

So, the answer is x = 4/5 or x = -4/5.