SOLUTION: 2x^3-x^2-18x+9=0

Question 329330: 2x^3-x^2-18x+9=0
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
2x^3-x^2-18x+9=0
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I graphed it and found one zero at x = 1/2
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1/2)....2....-1....-18....9
.........2.....0.....-18..|..0

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Quotient: 2x^2-18
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Solve 2x^2-18 = 0
2(x^2-9)=0
(x-3)(x+3) = 0
x = 3 or x = -3
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Solutions: x = 1/2, x = 3, x = -3
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Cheers,
Stan H.
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