Question

Determine os produtos resolver
( + 2 ) . (- 4 ) . ( + 1 )
( - 7 ) . ( + 3 ) . ( - 3 )
( + 2 ) . ( - 1 ) . ( + 5 ) . ( + 1 )
( + 3 ) . ( + 4 ) . ( + 1 ) . ( + 5 )
( - 2 ) . ( - 5 ) . ( - 1 ) . ( - 10 )
( - 20 ) . ( + 10 ) . ( - 1 ) . ( - 5 )
( - 35 ) . ( + 3 ) . ( - 12 )
( - 13 ) . ( + 27 ) . ( - 2 ) . ( + 4 ) . 0 . ( - 12 )

Answer 1

( + 2 ) . (- 4 ) . ( + 1 ) = - 8.1 = - 8

( - 7 ) . ( + 3 ) . ( - 3 ) = - 21.(-3) = + 63

( + 2 ) . ( - 1 ) . ( + 5 ) . ( + 1 ) = - 2.5 = - 10

( + 3 ) . ( + 4 ) . ( + 1 ) . ( + 5 ) = 12.1 = 12

( - 2 ) . ( - 5 ) . ( - 1 ) . ( - 10 ) = 10.10 = 100

( - 20 ) . ( + 10 ) . ( - 1 ) . ( - 5 ) = - 200.5 = - 1000

( - 35 ) . ( + 3 ) . ( - 12 ) = - 105.(-12) = 1260


( - 13 ) . ( + 27 ) . ( - 2 ) . ( + 4 ) . 0 . ( - 12 ) =  0
= - 13 . (-54) . 0.(-12)
= + 702.0
= 0