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Bubblez33

  • 3 years ago

If 3 less than a certain integer is multiplied by 4 more than the integer, the product is 2 less than the square of the integer. Find the integer.

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  1. Dido525
    • 3 years ago
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    |dw:1349753000805:dw|

  2. Dido525
    • 3 years ago
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    Solve for x.

  3. Bubblez33
    • 3 years ago
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    sorry didi i cant read that

  4. liza2
    • 3 years ago
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    (n-3)(n+4) = n^2 - 2

  5. liza2
    • 3 years ago
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    n is the integer.

  6. Dido525
    • 3 years ago
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    \[(x-3)(x+4)=x^2-2\]

  7. Dido525
    • 3 years ago
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    Better?

  8. Dido525
    • 3 years ago
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    X is the integer.

  9. Bubblez33
    • 3 years ago
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    yes better

  10. Bubblez33
    • 3 years ago
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    x^2-10=x^2 ??

  11. skyequilts
    • 3 years ago
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    don't forget ur middle term of the FOIL on the left, then won't the x^2 subtract off...

  12. Dido525
    • 3 years ago
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    Yes but the x^2's just cancel out.

  13. Bubblez33
    • 3 years ago
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    x-10 ?

  14. skyequilts
    • 3 years ago
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    x-10 = 0, so x = ???

  15. Bubblez33
    • 3 years ago
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    10

  16. skyequilts
    • 3 years ago
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    bingo!!

  17. Bubblez33
    • 3 years ago
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    awesome...thank u

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