[Toán 6] So sánh lũy thừa

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hocmai.toanhoc

Chào em!
Hocmai giúp em nhé!
Ta có: [TEX]32^{27}=(2^5)^{27}=2^{135}<2^{156}=2^{4.39}=16^{39}<18^{39}[/TEX]
[TEX]\Rightarrow -32^{27}>-18^{39}\Rightarrow (-32)^{27}>(-18)^{39}[/TEX]
 
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