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anonymous

  • 5 years ago

x^3+9x^2-2x-18 factor by grouping

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  1. amistre64
    • 5 years ago
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    9 and x are good candidates maybe: (x^3-2x) + (9x^2-18) x(x^2 -2) +9(x^2-2) (x+9) (x^2-2)

  2. amistre64
    • 5 years ago
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    (x+9) (x-sqrt(2)) (x+sqrt(2)) to get technical

  3. anonymous
    • 5 years ago
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    do u just pick polynomial out and factor them out

  4. amistre64
    • 5 years ago
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    i try to see what I can group that has something in common to pull out

  5. amistre64
    • 5 years ago
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    (x^3+9x^2) + (-2x-18) x^2(x+9) -2(x+9) (x+9) (x^2-2) works the same

  6. anonymous
    • 5 years ago
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    ok I was trying that and not havin any luck

  7. amistre64
    • 5 years ago
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    mix and match till you get something that works ;)

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