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  • 12-11-2016
  • Mathematics
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Positive root seven times negative root seven

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uhhhhidk
uhhhhidk uhhhhidk
  • 12-11-2016
7i

=√7 * √-7
=√(7*-7)
=√-49
= i√49
=7i : you cannot square root a negative number so you take out an imaginary number which is i, making it possible to square root. 
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