a, \(UCLN\left(435;25\right)=5\)
\(\Rightarrow UC\left(435;25\right)=\left\{1;5;25\right\}\)
b, \(UCLN\left(18;46\right)=2\)
\(\Rightarrow UC\left(18;46\right)=\left\{1;2\right\}\)
Chúc bạn học tốt!!!
a) Ta có:
+) \(435=3\cdot5\cdot29\)
+) \(25=5^2\)
=> \(ƯCLN\left(25,435\right)=5\)
=> \(ƯC\left(25,435\right)\in\left\{1;5\right\}\)
b) Ta có:
+) \(18=2\cdot3^2\)
+) \(46=2\cdot23\)
=> \(ƯCLN\left(18,46\right)=2\)
=> \(ƯC\left(18,46\right)\in\left\{1;2\right\}\)
\(a) \)
\(435=3.5.29\)
\(25=5^2\)
\(\Leftrightarrow UCNL\left(435;25\right)=5\)
\(\Leftrightarrow UC\left(435;29\right)=\left\{1;5\right\}\)
\(b)\)
\(18=2.3^2\)
\(46=23.2\)
\(UCLN\left(18;46\right)=2\)
\(UC\left(18;46\right)=\left\{1;2\right\}\)
a)Ta có : 435 = 3 . 5 . 29
25 = 52
=> ƯCLN(25.435) = 5
=> ƯC(25,435) = (1 ; 5)
b) Ta có : 18 = 2. 32
46 = 2 . 23
=> ƯCLN(18,46) = 2
=> ƯC(18,46) = 1 ; 2
