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algebra

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Find all zeros of the polynomial
P(x)=x^3 - 2 x^2 - 9 x - 30.

  • algebra - ,

    look for easy roots first: 1,2,3,5,6
    A little synthetic division shows that

    P(x) = (x-5)(x^2+3x+6)

    and you can do the quadratic as usual

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