27^15=(3^3)^15=3^45
81^11=(3^4)^11=3^44
vì 3^45>3^44
=>27^15>81^11
ta có : 2715= (33)15= 345
8111= (34)11 = 344
mà 45 > 44 => 345 > 344
=> 2515 > 8111
\(27^{15}=\left(3^3\right)^{15}=3^{45}\)
\(81^{11}=\left(3^4\right)^{11}=3^{44}\)
\(\Rightarrow3^{45}>3^{44}\)
\(\Rightarrow27^{15}>81^{11}\)
\(27^{15}=\left(3^3\right)^{15}=3^{45}\)
\(81^{11}=\left(3^4\right)^{11}=3^{44}\)
\(\Rightarrow3^{45}>3^{44}\)
\(\Rightarrow27^{15}>81^{11}\)
2715 bằng |33 }15 bằng 345
8111 bằng |34 }11 bằng 344
vậy 2715 LỚN HƠN 8111
