Question

a)\(3x.\left(x-\dfrac{3}{11}\right)=0\)

b)\(\left(6x+7\right).\left(x-\dfrac{9}{13}\right)=0\)

 

Answer 1

a: =>x=0 hoặc x-3/11=0

=>x=0 hoặc x=3/11

b: =>6x+7=0 hoặc x-9/13=0

=>x=-7/6 hoặc x=9/13

Answer 2

`3.x.(x-3/11)=0`

`@TH1:`

`3x=0`

`=> x=0:3`

`x=0`

Vậy `x = 0`

`@TH2:`

`x-3/11=0`

`x=0+3/11`

`x=3/11`

Vậy `x = 3/11`

____________________________________

`(6x+7).(x-9/13)=0`

`@TH1:`

`6x+7=0`

`6x=-7`

`x= (-7):6`

`x=(-7)/6`

Vậy `x = (-7)/6`

`@TH2:`

`x-9/13=0`

`x=0+9/13`

`x=9/13`

Vậy `x = 9/13`