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Find the product of (-5-4i) and its conjugate.product =

User Bethina
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1 Answer

5 votes
Given

The complex expression is given

-5-4i.

Step-by-step explanation

To determine the conjugate of the complex number.


a+bi=a-bi

Then the conjugate of -5-4i is


-5+4i

The product is


\begin{gathered} (-5-4i)(-5+4i)=25-20i+20i-16i^2 \\ 25-20i+20i-16i^2=25+16=41 \end{gathered}Answer

Hence the conjugate is


-5+4i

The product is 41.

User The Lazy Log
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