giúp tớ vớiii ạ,help meeee

Đáp án:

`bb{A}=|x-2|+2(x-1)+5`
   `=x-2+2x-2+5`
   `=3x+1`
`bb{B}=3(2x-1)-|3-x|+5`
   `=6x-3-[-(3-x)]+5`
   `=6x-3+3-x+5`
   `=5x+5`
`bb{C}=|2x-1|+5(x+2)-3`
 `*`TH1: `2x-1>=0 <=> x>=1/2`
`=> |2x-1|=2x-1`
`=> C=2x-1+5x+10-3`
         `=7x+6`
`*`TH2: `2x-1<0 <=> x<1/2`
`=> |2x-1|=-(2x-1)=1-2x`
`=> C=1-2x+5x+10-3`
         `=3x+8`
`bb{D}=|3-2x|+3x(x+2)-5` 
`*`TH1: `3-2x>=0 <=> x<=3/2`
`=> |3-2x|=3-2x`
`=> D=3-2x+3x^2+6x-5`
         `=3x^2+4x-2`
`*`TH2: `3-2x<0 <=> x>3/2`
`=> |3-2x|=-(3-2x)=2x-3`
`=> D=2x-3+3x^2+6x-5`
         `=3x^2+8x-8`