Question

Решите неполное квадратное уравнение 2х²+4х=0 2х²-8=0

Answer 1

1)
$2 {x}^{2} + 4x = 0 \\ 2x(x + 2) = 0 \\ x1 = 0 \\ \\ x + 2 = 0 \\ x2 = - 2$


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