Question

1) Efetue as multiplicações a) (+8)(+5) = b) (-8).(-5) = c) (+8)(-5) = d) (-8) (+5) = e) (-3) (+9) = f) (+3). (-9) = g) (-3).(-9) = h) (+3). (+9) =i)(+7).(+10)=j)(+7).(+10)=l)(-7).(+10)=m)(-7).(-10)=n)(+4).(+3)=o)(-5).(+7)=p)+9).(-2)=q)(-8).(-7)=r)(-4).(+6)=s)(-2).(-4)=t)(+9).(+5)=u)(+4).(-2)=v)(+8).(+8)=x)(-4).(+7)=z)(-6).(-6)=
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Answer 1

Resposta:

a) (+8).(+5) = 40

b) (-8).(-5) = 40

c) (+8).(-5) = -40

d) (-8).(+5) = -40

e) (-3).(+9) = -27

f) (+3).(-9) = -27

g) (-3).(-9) = 27

h) (+3).(+9) = 27

i)(+7).(+10)= 70

j)(+7).(+10)= 70

l)(-7).(+10)= -70

m)(-7).(-10)= 70

n)(+4).(+3)= 12

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

p)(+9).(-2)= -18

q)(-8).(-7)= 56

r)(-4).(+6)= -24

s)(-2).(-4)= 8

t)(+9).(+5)= 45

u)(+4).(-2)= -8

v)(+8).(+8)= 64

x)(-4).(+7)= -28

z)(-6).(-6)= 36

​