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Shannon20150

  • one year ago

Factor completely. -2k - k3 - 3k2 k(-k + 1)(k - 2) -k(k - 1)(k - 2) -k(k + 1)(k + 2)

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  1. Callisto
    • one year ago
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    What is the common factor of the three terms there?

  2. Shannon20150
    • one year ago
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    k

  3. Callisto
    • one year ago
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    Hmm.. One more.. Can you see the negative signs?

  4. Shannon20150
    • one year ago
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    -k

  5. Shannon20150
    • one year ago
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    is it the 2nd one

  6. Callisto
    • one year ago
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    Yup! So, take out the common factor and group the rest of the terms. You'll get this: \[-2k - k^3 - 3k^2\]\[=-k(2+ k^2 + 3k)\]Rearrange the terms a bit: \[ = -k (k^2+3k+2)\] From this, we can see that the 2nd one is nowhere near to the answer.

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