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1. efetue as divisões
a) (x²y³): (x²y²) =
b) (63a¹x): (-9 a³x²) =
c) (37x³y): (-x"y") =
d) (25 a³x²y4): (5x²) =

2- Calcule as polências

a) (4 a²b³)² =
b) (2 ab) =
c) (-x³y) ¹0 =
d) (5x³y¹)³=​