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anonymous

  • one year ago

Which of the following values "completes the square," or creates a perfect square trinomial, for x2 − 8x + ___? 8 16 –8 –16

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  1. anonymous
    • one year ago
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    For x² + bx + c, the number that completes the square is \[\left( \frac{ b }{ 2 } \right)^2\] for your problem that's\[\left( \frac{ -8 }{ 2 } \right)^2\] for your problem that's

  2. anonymous
    • one year ago
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    so c is correct

  3. anonymous
    • one year ago
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    imeant b

  4. anonymous
    • one year ago
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    @peachpi

  5. anonymous
    • one year ago
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    yes 16

  6. anonymous
    • one year ago
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    can you answer another one

  7. anonymous
    • one year ago
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    Using the completing-the-square method, find the vertex of the function f(x) = 2x2 − 8x + 6 and indicate whether it is a minimum or a maximum and at what point. Maximum at (2, –2) Minimum at (2, –2) Maximum at (2, 6) Minimum at (2, 6)

  8. anonymous
    • one year ago
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    is it a

  9. anonymous
    • one year ago
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    @peachpi

  10. anonymous
    • one year ago
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    can't be a maximum. It opens up because the number in front of x² is positve

  11. anonymous
    • one year ago
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    so c would be correctr

  12. anonymous
    • one year ago
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    @peachpi

  13. anonymous
    • one year ago
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    can't be a maximum

  14. anonymous
    • one year ago
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    so that only leave b :) @peachpi

  15. anonymous
    • one year ago
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    yes

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