AJUDE URGENTE


3- Calcule:



a) (-2/3)^0 b) (-2/3)-¹ c) (-2/3)-² d) (3/5)-¹ e) (3/5)-³



f) (7/4)^0 g) (4/7)-¹ h) (7/2)-²



4- Diga se existe ou não, no conjunto IR, a raiz quadrada de:



a) 25 b) -36 c) 1 d) 64 e) 10 f) -9 g) -10 h) 12

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