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1 July, 11:48

Calcule as potências a seguir:

A) - (1,2) ²

B) - 5²

C) (-5) ²

D) - (0,3) °

E) (-⅔) ³

F) (1⅔) ²

G) - 2/5) ³

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  1. 1 July, 13:17
    0
    (2/3) ³=2*2*2/3*3*3 = 8/27 (3/5) ^-2 = (5/3) ^2 = 5*5/3*3=25/9 (-2) ^5 = - 32-2^5=-32

    Essa questão do parenteses só muda quando o expoente for par, ai se estiver em parêntese, o valor (+/-) muda: (-3) ^2=+6-3^2=-6
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