Question

Obs: ajuda por favor

Answer 1

1) 2².{25-[34: (23-1.6)-32]}

4.{25-[34:17-32]}

4.{25-(-30)]}

4.{[25+30]}

4.55

220

2) [(18+3.2) : 8+5.3] +3

[24:8+5.3] +3

[3+15]+3

18+3

21

3) 8-{(-1) + [(3²-√16) : (-1)]}

8-{-1+[(9-4):-1]}

8-{-1+5:-1]}

8-{-6}

8+6

14

espero ter ajudado!!!