Решите уровнение 2x^2=2(1-2x)+x

Question

Решите уровнение 2x^2=2(1-2x)+x

Answer 1

2х² = 2-4х+х
2х²-2+4х-х = 0
2х²+3х-2 = 0
Д = 9-4*2*(-2) = 9+16=25
х₁ = (-3-5)/4 = -2
х₂ = (-3+5)/4 = 1/2