Thursday

September 18, 2014

September 18, 2014

Posted by **ash** on Monday, August 27, 2012 at 12:50am.

degree 4 zeros i, -18+i

enter the remaining zeros of f

please help me out!

- algebra college -
**Reiny**, Monday, August 27, 2012 at 8:17amcomplex roots always come in conjugate pairs,

so the roots are ħi and -18+i and -18-i

so you would have

(x+i)(x-i)(x+ 18-i)(x+18+i)=0

(x^2 + 1)(x^2 + 18x + xi + 18x + 324 + 18i - xi - 18i - i^2) = 0

(x^2 + 1)(x^2 + 36x +324 + 1) = 0

(x^2 + 1)(x^2 + 36x + 325) = 0

expand again, and simplify

**Answer this Question**

**Related Questions**

calculus - use the given zeros to find the remaining zeros of the function h(x)=...

college algebra--need help please!! - information is given about a polynomial f(...

college algebra--need help please!! - information is given about a polynomial f(...

college algebra--need help please!! - information is given about a polynomial f(...

Algebra - Use the given zero to find the remaining zeros of the function. f(x)=x...

College Algebra - OOPS I got the zeros wrong in the last post...please show work...

Algebra - Information is given about a polynomial f(x) whose coefficients are ...

calculus--please help!! - I have two questions that I don't understand and need ...

algebra - Use the given information about a polynomial whose coefficients are ...

Pre-calculus - Sorry i wrote the last question wrong, it was suppose to be ...