Помогите 5-2x=4-4x+x^2

Question

Помогите 5-2x=4-4x+x^2

Answer 1

X^2 - 4x + 2x + 4 - 5 = 0

D = 2^2 - 4 * (-1) = 4+4 = 8

x1 = (4 + корень_из_D) / 2
x2 = (4 - корень_из_D) / 2

Answer 2

5-2x=4-4x+x^2
5-2х-4+4х-х^2=0
1+2x-x^2=0
-x^2+2x+1=0
x^2-2x-1=0