Calcule as expressões abaixo:
a) ( -1 )^0 + ( - 6 ) : ( -2 ) - 2
b) 2^9 : ( 2^2 . 2^3 ) ^-3
a) ( -1 )^0 + ( - 6 ) : ( -2 ) - 2
b) 2^9 : ( 2^2 . 2^3 ) ^-3
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*Obs: todo n° elevado a 0 equivale a 1
B-
-5:4
-1,25
b) 2^9 : (2^5)-^3
2^9 : 2^-15
2^24