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doodlebop

  • 3 years ago

How do i expand ( x + 7 )( x- 7) Explain pleasse!!!

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  1. robinfr93
    • 3 years ago
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    since you have 4 terms here, the output should be, n^2 - 1 terms. Now to solve this follow this order.. (a+b)(a-b) => (a+b)(a+(-b)) 1) a*a 2)a*-b then 3)b*a 4)b*-b Add them all and solve. Hope this Helps. :)

  2. Shealah
    • 3 years ago
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    lol.. You are a Doodlebop!!! :D

  3. robinfr93
    • 3 years ago
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    :P hehehhehehehhehehe..

  4. doodlebop
    • 3 years ago
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    Its x^2- 49?

  5. doodlebop
    • 3 years ago
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    Late answer, i was busy lol

  6. robinfr93
    • 3 years ago
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    ooooooooooooooooh so this is what you meant by me being a doodlebop!!! :O

  7. doodlebop
    • 3 years ago
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    ?

  8. robinfr93
    • 3 years ago
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    read the top comments mate... :P

  9. doodlebop
    • 3 years ago
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    Did i get it wrong ???? :O

  10. robinfr93
    • 3 years ago
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    nah you got it right and in the quicker manner.. I just thought an elongated explanation would be better..

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