Question

х(х-2)(х+1)=х²(х-1)
хэээээлп

Answer 1

x( x^2 - x - 2) = x^3 - x^2
x^3 - x^2 - 2x - x^3 + x^2 = 0
- 2x = 0
2x = 0
x = 0