làm tiếp nè:
\(\left|\sqrt{x-1}-2\right|+\left|\sqrt{x-1}-3\right|\)
*)Nếu \(\sqrt{x-1}\)>3<=>x-1>9<=>x>10 thì \(\sqrt{x-1}\)-2>0 \(\sqrt{x-1}\)-3>0
Ta có:|\(\sqrt{x-1}\)-2|+|\(\sqrt{x-1}\)-3|=\(\sqrt{x-1}\)-2+\(\sqrt{x-1}\)-3=2\(\sqrt{x-1}\)-5
*)Nếu 2<\(\sqrt{x-1}\)<3<=>4<x-1<9... làm tiếp đi bận mất rồi