Question

1) Calcule as expressões:
a) [26 +14 : (14 - √ 49 ) ] : 7
b) [√196 - 13 . ( 16 - 3 . 22)] : 14
c) 36 .[10 - (102 : 4 . 5) - √9] : 18
d) 10 – [ 23 - 3o - ( 4 – 8 : 2)] - √4
e) 100 – {[√625 + ( -2 – 1 )3] : 2 + √49} : 2

Answer 1

Resposta:

A) 4

B) 47,428

C) 241

D) 1

E) 92,5

Explicação passo-a-passo:

a) [26+14:(14-7)]:7

=[26+14:7]:7

=[26+2]:7

=28:7  = 4

b) [14 - 13. (16-66)]:14

= [14-13 . (-50)] :14

=[14+650]:14

= 664 : 14 = 47,428

c) 36 . [10 - (25,5*5) -3] : 18

=36 . [10 -127,5 - 3 ] :18

= 36 . (-120,5) :18 = 241

d) 10 - [ 23 - 30 - 0 ] - 2

= 10 -7 -2 = 1

e) 100 - {[25+(-3) * 3] : 2 + 7} : 2

= 100 - {[25-9] : 2 + 7 } : 2

= 100 -{16 : 2 + 7} : 2

= 100 - 15 : 2 = 100 - 7,5

= 92,5