Question

[Ngô Nhung]

SO SÁNH:
a)\(\frac{1}{27^{11}}và\frac{1}{81^8}\)

b)\(\frac{1}{3^{99}}và\frac{1}{11^{21}}\)

Answer 1

[Nao Tomori]

vì  1/27^11 = 1/(3^3)^11 = 1/3^33

     1/81^8= 1/(9^2)^8 = 1/9^16 =  1/(3^2)^16 = 1/3^32

=> <

vì 1/3^99= 1/(3)^33.3=1/99^3 = 1/ (33.3)^3 = 1/33^9

  1/11^21=1/(11)^3.7=1/33^7

=> " > "

nhớ ****

Answer 2

[ronaldoxunghe]

<

>

**** bạn