Question

Calcule as expressões:
a) 1 – [7 – (4 – 3 . 2 ) . (-1 – 1)]
. 5=
b) (-2)³ - 7 – (-1) = 

Answer 1

a) 1 – [7 – (4 – 3 . 2 ) . (-1 – 1)]. 5=
     1 -[7 -   (4 - 6).(-2)].5 =
     1-[7 - (-2)(-2)].5 = 
     1-[7 - 4] .5 =
      1-3.5 =
       1-15=-14

b) (-2)³ - 7 – (-1) =
    -8     - 7 +1 = -14