Question

a) (+3).(+5)=
b) (-8). (-9)=
c) (+6).(-7)=
d) (-88).(+7)=
e) (-23).(-45)=
f) (-28).(+17)
g) (+238).(-78)=​

Answer 1

$a) \left(3\right)\left(5\right)\\\\=15\\\\b) \left(-8\right)\left(-9\right)\\\\=72\\\\c) \left(6\right)\left(-7\right)\\\\=-42\\\\d) \left(-88\right)\left(7\right)\\\\=-616\\\\e) \left(-23\right)\left(-45\right)\\\\=1035\\\\f) \left(-28\right)\left(17\right)\\\\=-476\\\\g) \left(238\right)\left(-78\right)\\\\=-18564$