Question

1°) (1/4)^2.4/5:(2/5)^3

2°) (1-1/2)^1/3/4+1/5/(1-4/5)^2


3°) 0,1-0,01/0,2-0,02

Answer 1

1°) (1/4)². 4/5 : (2/5)³ =

1/16 . 4/5 : (8/125) =

4/80 : 8/125 =

4/80 . 125/8 = 1/20 . 125/8 = 125/160 = 25/32

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3°) 0,1 - 0,01/0,2- 0,02 =

0,09 / 0,18 = 0,5

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Não estou entendendo a 2ª