Question

помогите
решите уравнение: (x-2)^2 +8x = (x-1)(1+x)

Answer 1

x^2-4x+4+8x-x^2+1=0
4x=-5
x=-5/4

Answer 2

(x-1)(1+x)=х2-1 !!!!!!!!!!!!

Answer 3

я перенесла влево

Answer 4

(x-1)(1+x)=х+х2-1-х

Answer 5

x-2)^2 +8x = (x-1)(1+x)

Х2-4х+4+8х=х2-1

Х2+4х+4-х2+1=0

4х+5=0

4х=5

Х=5/4

Х=1,25