(х-1)^2=-4х.помогите

Question

(х-1)^2=-4х.помогите

Answer 1

...=  - 2х + 1 + 4х = 0
+ 2х +1 = 0
D = 4 - 4 = 0
x = -1
Ответ: -1

Answer 2

(x-2)²=-4
x²-2x+1=-4x
x²+2x+1=0
(x+1)²=0
x=-1