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deedee28

  • 2 years ago

help me solve this problem by quadratic formula: y^2+7y-6=0

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  1. lgbasallote
    • 2 years ago
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    quadratic formula is \[\large y = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\] do you know which is a, b and c in your problem?

  2. deedee28
    • 2 years ago
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    a=1, b=7, c=-6

  3. deedee28
    • 2 years ago
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    so, i plugged in the numbers and I got 7+- the square root of 53 over 2...I do not think that is right.

  4. i<3science
    • 2 years ago
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    Go back and recheck your formula. You probably forgot to attach your negative sign to b.

  5. i<3science
    • 2 years ago
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    check your b^-4ac

  6. deedee28
    • 2 years ago
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    okay, -7+- the square root of 73, over 2.

  7. deedee28
    • 2 years ago
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    did I get that right this time?

  8. i<3science
    • 2 years ago
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    yes :) good job!

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