Question

How do you simplify `(-11-2i)(-7+12i)`?

Answer 1

`" The Exp.="101-118i.`

Explanation:

`"The Expression="(-11-2i)(-7+12i),`

`=-11(-7+12i)-2i(-7+12i),`

`=77-132i+14i-24i^2,`

`=77-118i-24(-1),...........[because, i^2=-1]`

`=77+24-118i,`

`rArr" The Exp.="101-118i.`