Question

Quanto é: -2 (-1)+4.(-2) +8

Answer 1

$( - 2).( - 1)$
$+ 4.( -2) + 8$
2+(-8)+8
-16+8
-8

Answer 2

$- 2 \times ( - 1) = 2 \\ 4 \times ( - 2) = - 8 \\ 2 - 8 + 8 = 2$