Question

[Trần Hồ Hoàng Nguyên]

3,8 + 2,5=.............

Answer 1

[nguyễn đức vượng]

\(81^{27}< 27^{37}\)

\(25^{80}>125^{51}\)

\(2^{240}>5^{80}\)

đúng đó

\(k-nha\)

Answer 2

[Taeyeon x Baekhyun]

\(81^{27}=\left(3^4\right)^{27}=3^{4.27}=3^{108}\) 

\(27^{37}=\left(3^3\right)^{37}=3^{3.37}=3^{111}\) 

Ta thấy \(108< 111=>3^{108}< 3^{111}\) hay \(81^{27}< 27^{37}\) 

\(25^{80}=\left(5^2\right)^{80}=5^{2.80}=5^{160}\)

\(125^{51}=\left(5^3\right)^{51}=5^{3.51}=5^{153}\)

Ta thấy \(160>153=>5^{160}>5^{153}\) hay \(25^8>125^{51}\)

\(2^{240}=2^{3.80}=\left(2^3\right)^{80}=8^{80}\)

Ta thấy \(8>5=>8^{80}>5^{80}\) hay \(2^{240}>5^{80}\)