Question

20) Resolva as seguintes expressões: a) (+20) ∶ (−1) 4−2 2 + (−2) 5 ∶ (+2) 4 − 5 0 b) {(+8) 2 − [(−3) 3+(−1) 5 ]. (−2) 2 } . (−1)​

Answer 1

Explicação passo-a-passo:

20) Resolva as seguintes expressões:

a) (+20) ∶ (−1)4−22 + (−2)5 ∶ (+2)4 − 50=

(+20):(1)-22+(-32):(16)-50=

20-22+(-2)-50=

-2+(-52)=

-54

b) {(+8)2− [(−3)3+(−1)5 ]. (−2)2 } . (−1)=

{(64)-[(-27)+(-1)].(4)}.(-1)=

{(-64)-[-28].(4)}.(-1)=

{-36.(4)}.(-1)=

{-144}.(-1)=

144

Espero ter ajudado ❤.