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anonymous

  • 5 years ago

quadratic equation question.

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  1. anonymous
    • 5 years ago
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    \[y ^{?}-80=0\]

  2. anonymous
    • 5 years ago
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    and I was told the answer should be \[\sqrt{80} \] and\[-\sqrt{80}\] but my online assignment isn't letting me type it in this format. Anyone have any idea what the correction would be?

  3. anonymous
    • 5 years ago
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    that's supposed to be a 2 not a ? after y

  4. anonymous
    • 5 years ago
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    Honestly, they're probably not asking for the negative one if it's only one answer. Try putting in 8.944. That's the value of sqrt(80).

  5. anonymous
    • 5 years ago
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    it's looking for 2 answers actually. and it has to be in radical form

  6. cherrilyn
    • 5 years ago
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    add 80 to the other side to get \[y ^{2}=80\] then get y alone by squarerooting. \[\sqrt{80} can be positive or negative\]

  7. anonymous
    • 5 years ago
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    I'd check with your teacher, that answers definitely right.

  8. cherrilyn
    • 5 years ago
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    maybe try putting in + or - sqrt(80) ?

  9. anonymous
    • 5 years ago
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    it's 2 different boxes for the answers. hmm. yeah. idk why it's not working but i'll maybe just move on to the next. Thanks

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