Monday, September 30, 2013
SV#1: Unit F Concept 10 - Finding all real and imaginary zeroes of a polynomial
*Sorry I stuttered a lot!
This problem is about finding zeroes of a 5th or 4th degree polynomial. Throughout the unit we have learned the steps into finding the zeros which will all be incorporated in this video. By using the rational roots theorem, Descartes Rule of Signs, synthetic division, and quadratic formula, we can find the zeros of the polynomial.
You will need to pay special attention to each step because they are all crucial into finding your zeroes. In the rational roots theorem, remember that it's p over q and not the other way around. For the Descartes Rule of Signs, be sure to change the signs only on numbers with a odd numbered degree. Don't forget that we count down by 2's so we can account imaginary numbers! For synthetic division, even if you don't get zero hero in your first try, don't be disappointed, just use other numbers and eventually you'll get zero heroes and get your equation to a polynomial where you will either factor or use the quadratic equation.
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