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haileemackk

  • 2 years ago

Which equation is a quadratic equation? 3x − y = 8x + 2 y = 7x(5 − 2x) + 9 7x2 + y = (3 + x)(7x − 1) y − 3 = (x2 − 3)(8x + 3) I think it's y = 7x(5 − 2x) + 9 because it looks like it's in standard form but I just want to make sure.

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  1. nubeer
    • 2 years ago
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    yes..

  2. johnweldon1993
    • 2 years ago
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    You would be correct :)

  3. haileemackk
    • 2 years ago
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    Okay, thanks!

  4. sami-21
    • 2 years ago
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    hre are more than one quadratic equations above.

  5. nubeer
    • 2 years ago
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    nop.. there are not.

  6. johnweldon1993
    • 2 years ago
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    @sami-21 no...that last equation would be a cubic

  7. sami-21
    • 2 years ago
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    7x2 + y = (3 + x)(7x − 1) y = 7x(5 − 2x) + 9

  8. nubeer
    • 2 years ago
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    7x^2 cancels up if u evaluate this option

  9. sami-21
    • 2 years ago
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    ok its one

  10. johnweldon1993
    • 2 years ago
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    correct @nubeer

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