2x^2-12x-1=2(1-2x) Помогите!

Question

2x^2-12x-1=2(1-2x) Помогите!

Answer 1

2x^2 - 12x - 1 = 2 - 4x
2x^2 - 12x + 4x - 1 - 2 = 0
2x^2 - 8x - 3 = 0 
D = 64 + 24 = 88
x1 = ( 8 + 4√5,5)/4 = 2 + √5,5
x2 = ( 8 - 4√5,5)/4 = 2 - √5,5