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Bookworm14

  • one year ago

Help with Factoring? Thanks! ~Bree :) (will post below, explanation needed if possible, thanks!)

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  1. Bookworm14
    • one year ago
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  2. welshfella
    • one year ago
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    2a^2 - 11a + 9 = 2a^2 - 2a - 9a + 9

  3. welshfella
    • one year ago
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    now you can factor the above by grouping

  4. welshfella
    • one year ago
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    Hint: take 2a out to factor the first 2 terms

  5. Bookworm14
    • one year ago
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    how did you know to subtract 2a? (sorry this is on my review and it has completely slipped my mind)

  6. welshfella
    • one year ago
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    I used the ac method you multiply the coefficient of x^2 by the last term here it is 2 * 9 = 18 i need 2 numbers whose product is + 18 and whose sum = middle part which is -11 so i write -2x - 9x

  7. welshfella
    • one year ago
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    - for x read a

  8. Bookworm14
    • one year ago
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    ohh okay, i think its coming back to me now, thank you!

  9. welshfella
    • one year ago
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    yw

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