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Math001

(4b-2)(5b-4) would this = 9b-6

  • one year ago
  • one year ago

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  1. Preetha
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    Multiplying, 20b^2-26b+8. Looks like a quadratic to me.

    • one year ago
  2. Yahoo!
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    Use Distributive Law

    • one year ago
  3. Boblovesmath
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    Use the foil method. Good luck,

    • one year ago
  4. Yahoo!
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    (a+b) * (d-c) = ad - ac + bd-bc

    • one year ago
  5. Math001
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    I did you the FOIL method and that is how I got 9b-6... is that wrong?

    • one year ago
  6. Yahoo!
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    \[(4b-2)(5b-4) = 20b^2 -16b - 10b + 8\]

    • one year ago
  7. Yahoo!
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    \[=20b^2-26b+8\]

    • one year ago
  8. Yahoo!
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    Like Preetha Said it would be a Quad Eq

    • one year ago
  9. Preetha
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    Yahoo, you have a good Math background!

    • one year ago
  10. Math001
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    okay I re-did it.. and I see what I did wrong... thank you Preetha and Yahoo for the help!

    • one year ago
  11. Math001
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    Preetha - are you still there?

    • one year ago
  12. Preetha
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    Yes

    • one year ago
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