anonymous
  • anonymous
square root of -7 and the square root of -7 equals what?
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
49
anonymous
  • anonymous
-7...
anonymous
  • anonymous
its 49

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anonymous
  • anonymous
If this is the question \[\sqrt{-7}\sqrt{-7}\]
anonymous
  • anonymous
time each other yes
anonymous
  • anonymous
7
anonymous
  • anonymous
\[\sqrt{7}(i ^{2})=-7\]
anonymous
  • anonymous
oops that should be a square root of 7 squared
anonymous
  • anonymous
oops that should be a square root of 7 squared\[(\sqrt{7})^{2}i ^{2}=-7\]
anonymous
  • anonymous
oh ok thanks
anonymous
  • anonymous
\[\sqrt{-7}*\sqrt{-7}\] \[\sqrt{(-7)(-7)}\] \[\sqrt{49}\] =7
anonymous
  • anonymous
no corec...
anonymous
  • anonymous
take i out of the radical first.
anonymous
  • anonymous
the square root of seven is \[\sqrt{7}\] not \[\sqrt{-7}\], so 7 is not the solution.
anonymous
  • anonymous
-7 is.
anonymous
  • anonymous
Does anyone see this?

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