Question

2 like

Answer 1

6

Answer 2

6

0

18

Answer 3

6

0

6

Answer 4

1) Ta có : ` 3x^2 - 3x = 3( x^2 - x ) = 3x`

  Mà ` x=2 => 3x = 3 . 2 = 6`

   Vậy ` 3x^2 - 3x = 6 ` với ` x=2 `

Answer 5

 \(3x^2-3x=3x\left(x-1\right)\)

1) \(x=2\Rightarrow3x\left(x-1\right)=6\)

2) \(x=0\Rightarrow3x\left(x-1\right)=0\)

3) \(x=-2\Rightarrow3x\left(x-1\right)=18\)