Question

alguém me ajuda por favor​

Answer 1

1) a) 3³-2×[3²+4²-5)×3] =

27-2×[9+(16-5)×3] =

27-2×[9+11×3] =

27-2×[9+33] =

27-2×42 =

27-84 =

-57

b) 40+{3+[(2³+12)+(13+2²×3)]+5} =

40+{3+[(8+12)+(13+4×3)]+5} =

40+{3+[(8+12)+(13+12)]+5} =

40+{3+[20+25]+5} =

40+{3+45+5} =

40+{48+5} =

40+53 =

93

c) {2⁵-[5+(3×7-4)]}÷5+3²×2-(8²-60)×5 =

{32-[5+(3×7-4)]}÷5+9×2-(64-60)×5 =

{32-[5+(21-4)]}÷5+9×2-4×5 =

{32-[5+17]}÷5+9×2-4×5 =

{32-22}÷5+9×2-4×5 =

10÷5+9×2-4×5 =

2+18-20 =

20-20 =

0