Question

Efetue:
a) (+2). (+1) =
b) (+8). (+2) =
c) (+5) · (+8) =
d) (-3).(-1) =
e) (-4).(-5) =
f) (-4).(-9) =
g) (-7).(-5) =
h) (+3).(-2) =
i) (+8).(-3) =
j) (-2) · (+35) =
k) (+21).(-12) =
l) (-9).(+11) =
​

Answer 1

Explicação passo-a-passo:

Efetue:

a) (+2). (+1) = +2

b) (+8). (+2) =+16

c) (+5) · (+8) =+40

d) (-3).(-1) =+3

e) (-4).(-5) = +20

f) (-4).(-9) = +36

g) (-7).(-5) = +35

h) (+3).(-2) = -6

i) (+8).(-3) = -24

j) (-2) · (+35) = -70

k) (+21).(-12) = -252

l) (-9).(+11) = -99