Express Product In The Form a + bi

[Karpthulu912]

This problem is driving me crazy and its the last one in an assignment I've been doing for the last week please help

-i(5+2i)​

(Sleepy)(Sadface)(Angry)

 

[phymat]

Re: Having some problem with this problem

Tried anything?

 

[Karpthulu912]

Re: Having some problem with this problem

ive tried and tried but can't seem to get the process down for it though i think the right answer is 2-5i but truthfully not sure

 

[phymat]

Re: Having some problem with this problem

-i(5+2i) = -5i - 2i²
Now it depends on what is being asked in the question

 

[Karpthulu912]

Re: Having some problem with this problem

Thx m8 for the help