MHB Express Product In The Form a + bi

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The discussion revolves around a math problem involving the expression of a complex number in the form a + bi. A user expresses frustration over not being able to solve the problem, specifically with the expression -i(5+2i). Another participant provides a breakdown of the expression, indicating it simplifies to -5i - 2i². The user believes the correct answer might be 2-5i but is unsure. The conversation highlights the challenges of understanding complex number operations in assignments.
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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)
 
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Re: Having some problem with this problem

Tried anything?
 
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
 
Re: Having some problem with this problem

-i(5+2i) = -5i - 2i²
Now it depends on what is being asked in the question
 
Re: Having some problem with this problem

Thx m8 for the help
 

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