333444=(3334)111=(1114.81)111333444=(3334)111=(1114.81)111

444333=(4443)111=(1113.64)111444333=(4443)111=(1113.64)111

Dễ thấy 

⇒333444>444333⇒333444>444333

3^445>2^665

221/222>443/445>665/668

chuc ban hoc tot ^-^

\(\frac{221}{222};\frac{443}{445};\frac{665}{668}\)

\(\frac{221}{222}< \frac{443}{445}< \frac{665}{668}\)

.....

giải ra đc ko

\(\frac{-67}{100}\)và \(\frac{-211}{360}\)MSC: 1800

Ta có:
\(\frac{-67}{100}=\frac{\left(-67\right).18}{100.18}=\frac{-1206}{1800}\)

\(\frac{-211}{360}=\frac{\left(-211\right).5}{360.5}=\frac{-1055}{1800}\)

Vì \(\frac{-1206}{1800}< \frac{-1055}{1800}\)nên \(\frac{-67}{100}< \frac{-211}{360}\)

ban dung roi

ngay 8/10 het han

\(\frac{221}{222};\frac{443}{445};\frac{668}{665}\)

\(\frac{221}{222}< \frac{443}{445}< \frac{668}{665}\)

.....

giúp mình với

\(c)16^{20}\)và \(32^{15}\)

Ta có: \(16^{20}=\left(2^4\right)^{20}=2^{80}\)

          \(32^{15}=\left(2^5\right)15=2^{75}\)

Vì \(2^{80}>2^{75}\)

\(\Rightarrow16^{20}>32^{15}\)

Vậy \(16^{20}>32^{15}\)