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willa

  • 5 years ago

Which of the following is a factor of x2 - 7x - 8? A) x + 1 B) x + 8 C) x - 8 D) x - 1 E) x - 7

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  1. amistre64
    • 5 years ago
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    c

  2. amistre64
    • 5 years ago
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    a and c really

  3. willa
    • 5 years ago
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    how do you figure it out???

  4. amistre64
    • 5 years ago
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    well; you have to factor it apart; and you have to know what terms are produced how. the last term is multiplied to get -8 and the middle term sums those 2 together -8+1 = -7 -8*1 = -8

  5. amistre64
    • 5 years ago
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    (x-8)(x+1) = x^2 -7x -8 FOIL is the terminology they use to work it back

  6. willa
    • 5 years ago
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    ok thankk you sooooooooooooo much

  7. amistre64
    • 5 years ago
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    youre welcome :)

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