Tìm x: (x - 2)(x - 1) = x(2x + 1) + 2(x + 2)(x + 2) - (x - 2)(x - 2) = 8x(2x - 1)(x^2 - x + 1) = 2x^3 - 3x^2 + 2

tìm x: (x-2)(x-1)=x(2x+1)+2
(x+2)(x+2)-(x-2)(x-2)=8x
(2x-1)(x^2-x+1)=2x^3-3x^2+2