52 779
Assignments Done
98,3%
Successfully Done
In October 2017
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Calculus Question for shasha

Question #42523
Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in standard form.
4, -14, and 5 + 8i

f(x) = x4 - 362.5x2 + 1450x - 4984

f(x) = x4 - 9x3 + 32x2 - 725x + 4984

f(x) = x4 - 67x2 + 1450x - 4984

f(x) = x4 - 9x3 - 32x2 + 725x - 4984


show work and explain it to me please
Expert's answer

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

Assignment Expert
15.11.2015 04:04

Dear emma!
Thank you for leaving a comment. It is known that i*i=-1. Since
(a-bi)*(a+bi)=a*a+abi-bi*a-bi*(bi)=a*a+(abi-abi)-b*b*(i*i)=
=a*a-b*b*(-1)=a*a+b*b.
In this question a=5, b=8.
Next, (x-5-8i)(x-5+8i)=(x-(5+8i))*(x-(5-8i))=x*x-(5-8i)x-(5+8i)x+(5+8i)*(5-8i)=x*x+x*(-5+8i-5-8i)+(5*5+8*8)=
=x*x-10x+89

emma
13.11.2015 13:43

how did u get rid of imaginary #s

Leave a comment

Ask Your question