Homework Help: calculus--please help!!

Posted by Paul on Thursday, December 27, 2012 at 7:07pm.

I have two questions that I don't understand and need help with.

1. information is given about a polynomial f(x) whose coefficients are real numbers. Find the remaining zerosof f.

degree 4, zeros i;9+i

2. form a polynomial f(x) with real coefficients having the given degree and zeros.

degree 4, zeros 3, multiplicity 2; 6i

f(x)=a(?)

calculus--please help!! - Damon, Thursday, December 27, 2012 at 7:10pm
1.
Need four zeros but every complex root comes with its complex conjugate
i so also -i
9+i so also 9-i

(x-3)(x-3)(x- 6i)(x+6i)
multiply that out

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