Question

1-calcular o valor das expressões:

Answer 1

primeira:

5^-1 - (1/2)³=

(1/5)^1 - 1/8=

1/5 - 1/8=

mmc:

(8-5/40)=

3/40

segunda:

2/3 +(4/5).(1/3)²=
2/3 +(4/5).(1/9)=
2/3 + 4/45=

mmc:

(30+4/45)=

34/45

terceira:

(1/3)^4 + (1/2)^-2.(5/4)²=

1/81 + (2/1)².(25/16)=

1/81 +(4/1).(25/16)=

1/81 + 100/16=

mmc:

(16+810/1296)=

826/1296=

simplificando:

413/648

:)