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June 24, 2016
Posted by **michelle** on Monday, December 6, 2010 at 11:27pm.

- math-use sqrt() -
**MathMate**, Monday, December 6, 2010 at 11:37pmIt would be clearer if you had written √ using the sqrt() notation, since the range of the square root would be clear.

I have to guess that the question is:

i squared square root -80

=i² * *radic;(-80)

(=i^2 * sqrt(-80))

=(-1) * sqrt(-2^4 * 5)

=(-1) * 2²sqrt(-5)

=-4sqrt(5)i