Giúp mk nốt bài này vs aa, vote 5 sao nốtt aa

`#Ju ly `

`1)2(x-1)-3(x-2)=-2(x-1) `

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

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

`=>x=-2 `

Vậy `S={-2} `

`2)4x^2+4x+1=4 `

`=>4x^2+4x+1-4=0 `

`=>4x^2+4x-3=0 `

`=>4x^2+6x-2x-3=0 `

`=>2x(2x+3)-(2x+3)=0 `

`=>(2x-1)(2x+3)=0 `

`TH1:2x-1=0 `

`=>2x=1 `

`=>x=1/2 `

`TH2:2x+3=0 `

`=>2x=-3 `

`=>x=-3/2 `

Vậy `S={1/2;-3/2} `

`3)4x(x+1)=2x(x-2)+3 `

`=>4x^2+4x=2x^2-4x+3 `

`=>4x^2-2x^2+4x+4x-3=0 `

`=>2x^2+8x-3=0(Vô  lí) `

Vậy `S={∅} `

`4)9x(x-1)+3x+1=0 `

`=>9x^2-9x+3x+1=0 `

`=>9x^2-6x+1=0 `

`=>(3x-1)^2=0 `

`=>3x-1=0 `

`=>3x=1 `

`=>x=1/3 `

Vậy `S={1/3} `

`5)1/2(x-3)-5=-3(1/3x+2) `

`=>1/2x-3/2=-x-6 `

`=>1/2x+x=3/2-6 `

`=>3/2x=-9/2 `

`=>x=-3 `

Vậy `S={-3} `

`6)4x^2-4x=0 `

`=>4x(x-1)=0 `

`TH1:4x=0 `

`=>x=0 `

`TH2:x-1=0 `

`=>x=1 `

Vậy `S={0;1} `

`7)4x^2-9=0 `

`=>4x^2=9 `

`=>x^2=9/4 `

`=>x^2=(+-3/2)^2 `

`=>x=+-3/2 `

Vậy `S={3/2;-3/2} `