Question

(х-1)^2=2х^2-6х-31 помогите решить

Answer 1

x^2  - 2x + 1 = 2x^2 - 6x - 31
x^2 - 2x + 1 - 2x^2 + 6x + 31 = 0 
- x^2 + 4x + 32 = 0 
x^2 - 4x - 32 = 0 
D = 16 + 4*32 = 144
x1 = (4 + 12)/2 = 8;
x2 = ( 4 - 12)/2 = - 4 

Answer 2

(x-1)^2=2х^2-6х-31 
x^2-2x+1=2x^2-6x-31
-x^2+4x+32=0 делим на -1
x^2-4x-32=0
D= 16- 4*(-32)
D=144=12^2
x1=(4+12)/2=8
x2=(4-12)/2=-4
Ответ: 8;-4