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Math001

  • 3 years ago

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

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

  2. Yahoo!
    • 3 years ago
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    Use Distributive Law

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

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

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

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

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

  8. Yahoo!
    • 3 years ago
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    Like Preetha Said it would be a Quad Eq

  9. Preetha
    • 3 years ago
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    Yahoo, you have a good Math background!

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

  11. Math001
    • 3 years ago
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    Preetha - are you still there?

  12. Preetha
    • 3 years ago
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    Yes

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