C)ta có:
\(625^5=\left(5^4\right)^5=5^{20}\)
\(125^7=\left(5^3\right)^7=5^{21}\)
vì \(5^{20}< 5^{21}\Rightarrow625^5< 125^7\)
k mk nha
d) Ta có:
\(3^{2n}=3^{2\cdot10n}=9^{10n}\)
\(2^{3n}=2^{3\cdot10n}=8^{10n}\)
vì \(9^{10n}>8^{10n}\Rightarrow3^{2n}>2^{3n}\)
MK KO CHẮC ĐÂU.
ĐÚNG THÌ K MK NHÉ.