find all zeros, write polynomial as product of linear factors
1) f(x)=9x^3 - x^2 +9x -9
2) f(x)=x^4 -21x^2 -100
3) f(x)=x^3 -3x^2 -5x +39

asked by Brent
  1. #1 There must be a typo here. Not factorable

    #2 (x^2-25)(x^2+4)
    now it should be easy

    #3 a little tinkering shows that you have
    again, complex roots.

    posted by Steve

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