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Saturday, December 6, 2014

Theory of Equations, 8

Category: Algebra

"Published in Newark, California, USA"

Find the equation of a polynomial if the roots are 3, 1, and -2


If one of the root of the equation is given which is -2 , then we need to get its conjugate because we want to eliminate the radical sign in the given equation. The conjugate of -2 is 2 . Hence, the equation or a factor from the product of a root and its conjugate is   

Therefore, the equation of a polynomial is