Positive root seven times negative root seven

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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 · Answer 1 · 2016-11-12T08:48:04+01:00

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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