anonymous
  • anonymous
Solve the equation x2 = 81 by finding square root this question is looking for two answers.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
ok when you square root something there is always two answers, do you know why?
anonymous
  • anonymous
say I am looking at the square root of 16, that is obviously 4 right?
anonymous
  • anonymous
Yeah

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anonymous
  • anonymous
so then could you also do the square root of 4?
anonymous
  • anonymous
ok but it could also be -4 do you see what i'm saying?
anonymous
  • anonymous
Ohhhhhh yeah okay
anonymous
  • anonymous
so this would be positive 9 and negative 9
anonymous
  • anonymous
Oh okay thank you!
anonymous
  • anonymous
no problem glad to help

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