\(3x^2-11x+6\)
\(=3x^2-9x-2x+6\)
\(=\left(3x^2-9x\right)-\left(-2x+6\right)\)
\(=3x\cdot\left(x-3\right)-2\cdot\left(x-3\right)\)
\(=\left(3x-2\right)\cdot\left(x-3\right)\)
3x2 - 11x + 6
= 3x2 - 2x - 9x + 6
= ( 3x2 - 2x ) - ( 9x - 6 )
= x( 3x - 2 ) - 3( 3x - 2 )
= ( x - 3 )( 3x - 2 )
Bài làm
\(3x^2-11x+6=\left(3x-2\right)\left(x-3\right)\)