donnie1999
  • donnie1999
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
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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donnie1999
  • donnie1999
@mathstudent55
anonymous
  • anonymous
\[x^2 = 64 \implies x = \pm 8\]
donnie1999
  • donnie1999
so is it 32?

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donnie1999
  • donnie1999
@iambatman
anonymous
  • anonymous
\(\pm\) means plus minus \(\pm8\) is defined as \(+8,-8\)
anonymous
  • anonymous
to see why, test what is \((-8)^2\)
anonymous
  • anonymous
Sorry to confuse you donnie, yes what jenny said :)
donnie1999
  • donnie1999
its 64
donnie1999
  • donnie1999
@jenny1994 so would the answer be -8,8
anonymous
  • anonymous
batman gave you your answer, it's \pm8 or 8,-8 if you're only given positive choices, then it's just 8
donnie1999
  • donnie1999
lol that's what I thought it was since the begging

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