\(\dfrac{121.75.130.169}{39.60.11.198}=\dfrac{11^2.3.5^2.2.5.13.13^2}{3.13.2^2.3.5.11.2.3^2.11}=\dfrac{2.3.5^3.11^2.13^3}{2^3.3^4.5.11^2.13}=\dfrac{5^2.13^2}{2^2.3^3}=\dfrac{4225}{108}\)
=\(\dfrac{121.75.130.169}{39.60.11.198}\)
=\(\dfrac{25.65.13.13}{13.30.18}\)
=\(\dfrac{5.5.65.13.13}{13.6.5.18}\)
=\(\dfrac{5.65.13}{6.18}\)
=\(\dfrac{65.65}{108}\)
=\(\dfrac{4225}{108}\)
Chúc bạn học tốt !
Ta có: \(\dfrac{121\cdot75\cdot130\cdot169}{39\cdot60\cdot11\cdot198}\)
\(=\dfrac{11^2\cdot15\cdot5\cdot13\cdot10\cdot13^2}{13\cdot3\cdot15\cdot4\cdot11\cdot11\cdot18}\)
\(=\dfrac{5\cdot13^2\cdot10}{3\cdot4\cdot18}=\dfrac{4225}{108}\)
