Question

Calcule:
a) (+8).(+11)

b) (+3).(-13)

c) (-4).(+3)

d) (-7).(-6)

Answer 1

a) (+8).(+11) = + 88

b) (+3).(-13) = - 39

c) (-4).(+3) = - 12

d) (-7).(-6) = + 42