Question

3. Resolva as expressões numéricas:
a) – 1,2 – 2 . [ ( - 5 + 3,2 ) : ( - 0,4) – 3 ]

Answer 1

Resposta:

Explicação passo a passo:

A) (1/2)²+(1/3)²=

    1/4 + 1/9 =       mmc = 36

     9/36 + 4/36 =

     9 + 4 / 36 =

     13/36

B) (2/3)-(1/5)³=

    2/3 - 1/125 =           mmc 375

    250/375 - 3/375 =

    250 - 3 / 375 =

    247 / 375  

C) 3²-(3/2)²=

    9 - 9/4 =         mmc 4

    36/4 - 9/4 =

    36 - 9 /4 =

    27 / 4  

D) (1/3)²:2/9-1/6=

    1/9 : 2/9 - 1/6 =        mmc 18

    2/18 : 4/18 - 3/18 =

    2 : 4 - 3 /18 =

    0,5 -3/18=

    2,5/18

E)(3/8)*(4/5)²+(1/6)²=

   3/8 . 16/25 + 1/36 =

   48/200 + 1/36 =    

   12/50 + 1/36 =       mmc 900

    216/900 + 25/900 =  

    216 + 25/900 =

    241 / 900 =

F) [(1/4)²+(1/2)³]=

    1/16 + 1/8 =       mmc 16

    1/16 + 2/16 =