Question

So sánh : \(27^{11}\)và \(81^8\)

Answer 1

\(27^{11}=\left(3^3\right)^{11}=3^{33};81^8=\left(3^4\right)^8=3^{32}\)

Vì \(33>32\Rightarrow27^{11}>81^8\)

Vậy 27¹¹>81⁸

Answer 2

Ta có: \(27^{11}=\left(3^3\right)^{11}=3^{33}\)

           \(81^8=\left(3^4\right)^8=3^{32}\)

Vì \(3^{33}>3^{32}\) nên \(27^{11}>81^8\)

Answer 3

phân tích 27¹¹=3³³  (  27¹¹=(3³)¹¹   )

81⁸=3³²  (  81⁸=(3⁴)⁸   )

Vì 3³³<3³² nên 27¹¹<81⁸

Answer 4

27¹¹ > 81⁸

Answer 5

Ta có :

\(27^{11}=\left(3^3\right)^3=3^9\)

\(81^8=\left(3^4\right)^8=3^{32}\)

Vì : \(9< 32\)nên \(27^{11}< 81^8\)

Answer 6

\(27^{11}=\left(3^3\right)^{11}=3^{33}\)

\(81^8=\left(3^4\right)^8=3^{32}\)

vi \(3^{33}>3^{32}\) nen  \(2^{11}>81^8\)

vay \(2^{11}>81^8\)