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1- Resolver as potências
a) 2⁴ . 2⁶ . 2⁸ =

b) 3²⁰ : 3¹⁰ : 3⁵ =

c) 5⁴⁰ : 5¹⁵ : 5⁹ =

d) 2⁶ . 2⁹ : 2⁵ = 2⁶ + ⁹ - ⁵ = 2¹⁰