Question

5) Calcule o valor das expressões.
a) 7²– 10 + (2³ – 5)

b) 2⁵ – (16:2 + 3²)

c) [100 – (5² – 3²)] : 2.

d) 7 + [5² : (10 – 5) + 2³. 2]

e) 50 -2. [8 + (10 - 3²) - 3]

f) 2. [6 + 7. √9): 3² + (21 - 5•√4)]: ​

Answer 1

Resposta:

a) 49 - 10 + ( 8 - 5)=

49 -10 + 3=

39+3=

42

b) 32 - ( 8 +9)=

32 - 17=

15

c) [ 100 - ( 25 - 9)] : 2=

[ 100 - 16] : 2=

84 :2=

42

d) 7 + [ 25 : 5 + 8 .2]=

7 + [ 5 + 16]=

7 + 21=

28

e) 50 - 2 .[ 8 + (10 - 9) -3]=

50 - 2 . [ 8 + 1 - 3]=

50 - 2 . [ 9 -3]=

50 - 2 . 6=

50 - 12=

38

f) 2.[( 6 + 7. 3 ): 9 + ( 21 - 5 .2)]=

2. [( 6 + 21):9 + ( 21 - 10)]=

2 . [ 27 : 9 + 11]=

2 . [ 3 + 11]=

2 . 14=

28