Question

Tìm x biết :

X \(\in\) ƯC (250 ; 48 )

Answer 1

\(x\inƯC\left(150;48\right)\)

\(\Rightarrow x\in\left\{-1;-2;1;2\right\}\)

Chúc bạn học tốt!!!

Answer 2

Phân tích ra TSNT ta có:
\(250=5^3.2\)

\(48=2^4.3\)

\(UCLN\left(250;48\right)=2\)

\(ƯC\left(250;48\right)=Ư\left(2\right)\)

\(\Leftrightarrow x\inƯ\left(2\right)\)

\(x\in\left\{\pm1;\pm2\right\}\)