Question

8 - 2х2 = 0(решите уравнение )

Answer 1

$8 - 2x^2 = 0\ /:(-2)\\x^2-4=0\\(x-2)(x+2)=0\\x-2=0 \ \ \ \ \ \ \ \ x+2=0\\x=2\ \ \ \ \ \ \ \ \ \ \ \ \ x=-2$

Ответ: - 2; 2

Answer 2

$8 - 2 {x}^{2} = 0 \\ \\ 4 - {x}^{2} = 0 \\ \\ - {x}^{2} = - 4 \\ \\ x = 2 \: \: \: x2 = 2 \\ x = - 2 \: \: \: x1 = - 2$