Question

1) Calcule o valor das expressões a seguir:
a) ( - 3 )4 + ( 3 )2
b) ( 2 )3 + ( 4 )2 - ( - 5 )2
c) ( - 5 )3 – ( 10 )2 - ( 2 )4
d) ( - ½ )-6 ÷ ( 4 )3
e) ( 2 )-5 × ( - 2 )6 + √9
f) ( - 5 )4 - ( - 5 )0 + ( 1 )5

Answer 1

Resposta:

a)  

1/4 - 3/4 - 3/2 - 1/2  

- 2/4 - 4/2  

- 1/2 - 4/2 = - 5/2  

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b) 3/4 : 2/3 : 9/12  

3/4 . 3/2 : 3/4  

9/8 . 4/3 = 36/24 = 3/2  

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c) 1/2 + (-3/10) + 1/6  

1/2 - 3/10 + 1/6               ( mmc de 2 , 10 e 6 = 30 )  

15/30 - 9/30 + 5/30  

6/30 + 5/30 = 11/30  

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d) 0,2 + 3/4 - 5/2 - 0,5  

2/10 + 3/4 - 5/2 - 5/10            ( mmc de 10,4 e 2 = 20 )  

4/20 + 15/20 - 50/20 - 10/20  

19/10 - 60/20 = - 41/20