Question

[x+y].[4x-2y] , para x=3 e y=6


a] 23
b] 35
c]40
d] 56

Answer 1

(x+y) . [4x-2y] =

(3+6) . [(4.3)-(2.6)] =

9 . [12-12] =

9 . 0 =

0