\(3x^2-7x+2\)
= \(x.\left(3x-7\right)+2\)
= \(x.\left(3x-7\right)+2\)
=\(x.\left(3x-7+\frac{2}{x}\right)\)
Dương Bá Gia Bảo vãi! :v Bài này dùng tách hạng tử
\(3x^2-7x+2=3x^2-6x-x+2\)
\(=\left(3x^2-6x\right)-\left(x-2\right)\)
\(=3x\left(x-2\right)-\left(x-2\right)=\left(x-2\right)\left(3x-1\right)=3\left(x-2\right)\left(x-\frac{1}{3}\right)\)
3x2−7x+2=3x2−6x−x+23x2−7x+2=3x2−6x−x+2
=(3x2−6x)−(x−2
=(3x2−6x)−(x−2)
=3x(x−2)−(x−2)
=(x−2)(3x−1)
=3(x−2)(x−1/3)