Question

Помогите последний раз 2х^2-18=0

Answer 1

2$x^{2}$ - 18 = 0
2($x^{2}$ - 9) = 0
$x^{2}$ - 9 = 0
$x^{2}$ = 9
x = - 3
x = 3

Answer 2

Благодарствую