Question

16 Calcule o valor das expressões.
a) –{+15 - [(-4 + 20) – 20) – 17}
b) 3. (-4) + (-5).(-6).(-2) + + (-4). (-7)
c) 2 + {5 · [(6 - 4:2)2 – 15]4 – 313
d) (7 – 6)3 – [4 – (52 – 22) . 7]​

Answer 1

RESPOSTA: a)-{+15-[(-4+20)- 20)+17}

-{15-[(16)-20]-17}

-{+15-(4)-17}

-(19-17)

-(2)

-2

B)3×(-4)+(-5)×(-6)×(-2)+(-4)×(-7)

-12+(-60)+28

-12+(-32)

-44

C)2+{5×[(6-4:2)2-15]4-313

2+{5×[16-15]⁴-3}³

2+{5×1-3}³

2+{2}³

2+8

10

D)(7-6)3-[4-(52-22)×7]

1-[4-(25-4)×7]

1-(4-21×6)

1-(4-147)

1-(-143)

144