Nham nghiem thi ta thay pt co 1 ngiem x=2/3
=> tach nhu sau :
\(3x^3-2x^2-3x^2+2x+3x-2\)
\(3x^2\left(x-\frac{2}{3}\right)-3x\left(x-\frac{2}{3}\right)+3\left(x-\frac{2}{3}\right)\)
\(\left(x-\frac{2}{3}\right)\left(3x^2-3x+3\right)\)
Chuc ban hoc tot