SOLUTION: use the rational zeros theorem to find all the real zeros of the polynomial function. use the zeros to factor f over the real numbers. f(x)= x^3+ 2x^2 -9x -18.

Question 423775: use the rational zeros theorem to find all the real zeros of the polynomial function. use the zeros to factor f over the real numbers. f(x)= x^3+ 2x^2 -9x -18.
Answer by Gogonati(855) (Show Source): You can put this solution on YOUR website!
Solution: -3, -2, 3 are all real zeros for this polynomial,thus we can divide it by (x+3), (x-3)and (x+2)
Finally we have:

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