\(\text{Ta có : }\hept{\begin{cases}34=2.17\\81=3^4\\55=5.11\end{cases}}\Rightarrow\left(34,81,55\right)=1\)
\(\RightarrowƯC\left(34,81,55\right)=Ư\left(1\right)=\left\{-1;1\right\}\)
Hk tốt
Ta có: 34=2.17
81=34
55=5.11
=>ƯCLN(34;81;55)=1
=>ƯC(34;81;55)\(\in\)Ư(1)={1;-1}