Question

Решите уравнение: 2х^2-12х-1=2(1-2х)

Answer 1

2x^2 - 12x - 1 = 2 - 4x
2x^2 - 12x + 4x - 1 - 2 = 0 
2x^2  - 8x - 3 = 0 
D = 88; √D = 4√5,5
x1 = (8 + 4√5,5)/4 = 2 + √5,5
x2 = (8 - 4√5,5)/4 = 2 - √5,5