Question

$2 {x}^{2} - 6 = 156$


​

Answer 1

Explicación paso a paso:

2x² - 6 = 156

2x² = 162

x² = 81

x = 9

Answer 2

Respuesta:

x = 9

x = -9

Explicación paso a paso:

2x² - 6 = 156

2x² = 156 + 6

2x² = 162

x² = 162/2

x² = 81

x = ±√81

x = 9

x = -9