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donnie1999

  • one year ago

HELP ME PLEASE!!! Solve the equation x^2 = 64 for x I got the answer 8 but i'm not sure if that's wright. @skullpatrol

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  1. donnie1999
    • one year ago
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    @mathstudent55

  2. anonymous
    • one year ago
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    \[x^2 = 64 \implies x = \pm 8\]

  3. donnie1999
    • one year ago
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    so is it 32?

  4. donnie1999
    • one year ago
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    @iambatman

  5. anonymous
    • one year ago
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    \(\pm\) means plus minus \(\pm8\) is defined as \(+8,-8\)

  6. anonymous
    • one year ago
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    to see why, test what is \((-8)^2\)

  7. anonymous
    • one year ago
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    Sorry to confuse you donnie, yes what jenny said :)

  8. donnie1999
    • one year ago
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    its 64

  9. donnie1999
    • one year ago
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    @jenny1994 so would the answer be -8,8

  10. anonymous
    • one year ago
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    batman gave you your answer, it's \pm8 or 8,-8 if you're only given positive choices, then it's just 8

  11. donnie1999
    • one year ago
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    lol that's what I thought it was since the begging

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