Tìm x, biết (3x + 2)(x - 1) - 3(x + 1)(x -2) = 4
Tìm x, biết (3x + 2)(x − 1) – 3(x + 1)(x −2) = 4.
(3x + 2)(x − 1) – 3(x + 1)(x −2) = 4
3x2 – 3x + 2x −2 – 3x2 + 6x – 3x + 6 = 4
2x = 0
x = 0
Vậy x = 0.