anonymous
  • anonymous
Solve using the square root method. Round to the nearest tenth if necessary. x2 + 15 =0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
These are the answer choices: A. {3.9} B. {3.9, -3.9} C. {7.5, -7.5} D. no real solution
amistre64
  • amistre64
i dunno a sqrt method, but + added to + never gets to zero without being complicated
anonymous
  • anonymous
nope i got this :)... x^2 = 15. \[x= \pm \sqrt{15}\]

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amistre64
  • amistre64
a little off:\[x=\pm\sqrt{-15}\]
anonymous
  • anonymous
4^2 ~ 16. so 3.9 and -3.9
anonymous
  • anonymous
Op. got me ;)
anonymous
  • anonymous
*oops. you cant do sqrt(- negative numbers). that makes it a "complex" solution. so no real solution.
anonymous
  • anonymous
Oh, I see!! Thanks both of you! :)
amistre64
  • amistre64
:)
anonymous
  • anonymous
thanks amistre :P

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