Math

posted by CheezyReezy

Find all complex zeros for the following polynomial function. Please show all of your work.

f(x) = x^4 - 91x^2 - 900

Hi, I need help... I'm not understanding this complex zero..

  1. Mgraph

    Substitute: x^2=z => x^4=z^2

    z^2-91z-900=0
    (z-100)(z+9)=0
    If z=100, x^2=100 then x=10 or x=-10
    If z=-9, x^2=-9=9i^2 then x=3i or x=-3i

Respond to this Question

First Name

Your Answer

Similar Questions

  1. find real and complex 0

    Find the real and complex zeros of the following function. Please show all of your work. f(x) = x^3 + 2x^2 - 6x + 8
  2. algebra

    find all complex zeros for the following polynomial function please show all your work f(x) = x^3 - 125 ?
  3. college algebra

    find the complex zeros of the polynomial function. write f in factored form. use complex zeros to write f in factored form f(x)= x^3-6x^2+21x-26
  4. pre-calculus

    find the complex zeros of the polynomial function. write F in the factored form. f(X)=x^3-7x^2+20x-24 use the complex zeros to write f in factored form. f(x)= (reduce fractions and simplify roots)
  5. calculus

    find the complex zeros of the polynomial function. write f in factored form. f(x)=x^3-10x^2+42x-72 please show work.
  6. calculus--please help!!

    find the complete zeros of the polynomial function. Write f in factored form. f(x)=3x^4-10x^3-12x^2+122x-39 **Use the complex zeros to write f in factored form.** f(x)= Please show work
  7. Find the complex zeros

    Find the complex zeros of the polynomial function. Write f in the factored form. f(x)=x^3-3x^2+7x-5 f(x)=
  8. algebra

    Find the complex zeros of the polynomial function. Write f in factored form. F(x)=x^3-8x^2+29x-52 Use the complex zeros to write f in factored form F(x)=____(reduce fractions and simplify roots)
  9. Calculus

    Score for Question 2: ___ of 40 points) For the polynomial (x)=x^5-5x^4+12x^3-24x^2+32x-16 , answer the following questions. Show all of your work. How many zeros does the function have over the set of complex numbers?
  10. Algebra

    I need help with a few questions, please explain. 1. Write a polynomial function in standard form with zeros -1, -1, 6. 2. Find the roots of the equation x^3 – 3x^2 + x + 5 3. Describe the number and type of roots for the polynomial …

More Similar Questions