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HN
0
6 tháng 9 2016
5^217 = 5 * 5^216 = 5 * 125^72 > 125^72
mà 125^72 > 119^72
=> 5^217 > 119^72
giúp tớ nhé
tớ bị trừ 513 điểm
cảm ơn trước
NT
0
NP
0
L
2
19 tháng 12 2021
^$@*&^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$%$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%$%$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$%%%%%%%%$%%$%$%$%$%%%%%%%%%%%%%%%%%%454%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%$%%%%%%%%%%%%$%$%%$$%$%$%$%$%$%$%$%$
KV
12 tháng 9 2023
8⁵ = (2³)⁵ = 2¹⁵ = 2.2¹⁴
3.4⁷ = 3.(2²)⁷ = 3.2¹⁴
Do 2 < 3 nên 2.2¹⁴ < 3.2¹⁴
Vậy 8⁵ < 3.4⁷
ND
Nguyễn Đức Trí
VIP
12 tháng 9 2023
\(8^5=2^{15}=2.2^{14}\)
\(3.4^7=3.2^{14}>2.2^{14}\)
\(\Rightarrow8^5< 3.4^7\)
so sánh 5^143 và 7^119
5^143<5^144=5^12.12=(5^12)^12=(5^10.5^2)^12
7^199<7^120=7^10.12=(7^10)^12=(7^10 . 1)^12
=>7^10>5^10 . 5^2
Vậy: 7^199>5^143