Question

2 x al cuadrado menos 8 igual a cero

Answer 1

Respuesta:

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