Question

2 x ao quadrado menos 8 igual a zero

Answer 1

2x^2 - 8 = 0
2x^2 = 8
x^2 = 8/2
x^2 = 4
x = V4
x = 2

Answer 2

$2x^{2}-8 =0$
$2x^{2} = 8$
$x^{2} = \frac{8}{2}$
$x^{2}=4$
$x= \sqrt{4}$
$x= 2$