Learning starts with a question
First time here? Checkout the FAQs!
x

*Math Image Search only works best with zoomed in and well cropped math screenshots. Check DEMO


MathsGee Android Q&A

0 like 0 dislike
64 views
Find a quadratic with real coefficients and quadratic term \(x^{2}\) that has \(5-4 i\) as a root.
in Mathematics by Platinum (147,718 points) | 64 views

1 Answer

0 like 0 dislike
Best answer
If \(5-4 i\) is a root, then so is \(5+4 i\). The sum of the roots is \(5-4 i+5+4 i=10\), and the product of the roots is \((5-4 i)(5+4 i)=25+16=41\). The quadratic is
\[
x^{2}-10 x+41
\]
Final Answer: The final answer is \(x^{2}-10 x+41\)
by Platinum (147,718 points)

Related questions

0 like 0 dislike
0 answers
0 like 0 dislike
1 answer
0 like 0 dislike
1 answer
asked Aug 24, 2020 in Mathematics by CT Diamond (49,236 points) | 175 views
0 like 0 dislike
1 answer
0 like 0 dislike
1 answer
0 like 0 dislike
1 answer
asked Aug 25, 2020 in Mathematics by CT Diamond (49,236 points) | 1,668 views

Join MathsGee, where you get quality STEM education support from our community of verified experts fast.


On the MathsGee, you can:


1. Ask questions


2. Get expert answers


3. Vote on questions and answers


4. Tip your favorite community members


5. Join expert live video sessions (Paid/Free)


6. Earn points by participating



Posting on MathsGee


1. Remember the human


2. Act like you would in real life


3. Find original source of content


4. Check for duplicates before publishing


5. Read the community guidelines




MathsGee Rules


1. Answers to questions will be posted immediately after moderation


2. Questions will be queued for posting immediately after moderation


3. Depending on the number of messages we receive, you could wait up to 24 hours for your message to appear. But be patient as posts will appear after passing our moderation.




MathsGee Android Q&A

MathsGee Android Q&A