Question

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

Answer 1

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

x^2-2x+4+8x=x+x^2-1-x

x^2-x^2-2x+8x-x+x=-1-4

6x=-5

x=-5/6