Question

POOOR FAVOR UUULTIMAAA 10 PONTOOOOOS

CALCULE O VALOR X.Y NOS SEGUINTES CASOS
X=+4 e Y = +5
X =-5 e Y = +3
X = -6 e Y = -7
X = 18 e Y = -9

Answer 1

+4.+5
20

-5.3
-15

-6.-7
-42

18.-9
-162

Answer 2

x=+4 y=+5
x.y= +4.+5=+20
x=-5 y=+3
x.y=-5.+3=-15
x=-6 y=-7
x.y=-6.(-7)=42
x=18 y=-9
x.y=18.(-9)=-162