ANSWERS: 3
  • to find all the roots of a polynomial expression, you can not use synthetic division. you would need to use some trig, and i can get the formula for you if you wish.
  • Supposing you have a method of finding one root, c, of a polynomial P, then x-c is a factor of that polynomial. Divide x-c into P and you get a simpler polynomial, which you solve to get the remaining roots. But polynomials of degree 5 and above have no closed-form solution in general, so unless you can easily find a root, you will need to use numerical (inexact) methods of finding the roots.
  • How do you find the Question(polynomial)? when the answer is: x=3+4i and x=3-4i

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