Question

phân tích đa thức thành nhân tử:

x² + x - 6

 

Answer 1

\(=x(x+1)-6\)

Answer 2

\(=x^2+3x-2x-6\\ =x\left(x+3\right)-2\left(x+3\right)\\ =\left(x-2\right)\left(x+3\right)\)

Answer 3

\(x^2+x-6=x^2-2x+3x-6=\left(x^2-2x\right)+\left(3x-6\right)\)

\(=x.\left(x-2\right)+3.\left(x-2\right)\)

\(=\left(x-2\right).\left(x+3\right)\)

Answer 4

`x^2 +x -6`

`=x^2 + 3x -2x -6`

`=x(x+3) -2(x+3)`

`=(x-2)(x+3)`

Answer 5

`x^2 +x-6`

`=(x-2)(x+3)`