Resposta :

3478elc
( 1/ 5^2/3)^3 = (1/5)^(2/3).3 =(1/5)^6/3 = = (1/5)^2 = 1/25

 ( 2^12/ 2^10) ^1/2]
= (2^(12-10)^1/2=2^2(1/2) = 2^^2/2 = 2^1 = 2

  0,333.. = 3/9 = 1/3

 1  - 2 -  1   mmc = 75
 25         3

 3 - 150 - 25 =  - 172
    75                  75

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