1) o valor potência com base fracionária e expoente inteiro de -4/9-2 a) = -16/81 b) = 8/18 c) = 81/16 d) = 2/4 2) qual o valor de: 23; (-2)3; -23 a) = +8 b) = -9 c) = -8 d) = 63 3) Reduza a uma potência: [(– 3)4]3 a) = -7 b) = (– 3)12 c) = (-3)7 d) 312 4) Calcule a seguinte potência 255 a) =125 b) = 25.25.25.25.25 c) =5.5.5.5.5 d) 3.125 5) Determine o valor dessa potência: 251 a) -25 b) 1 c) 50 d) 25

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