Yes. But until you study complex numbers, there is no solution.
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I'm not quite sure, but when the number inside the radical (square root sign) is negative, there is a no real-number solution.
- (400^.5) = -(20) = -20 you just do the square root of the number, and attach the negative in front. and if you ever include the negative inside the square root, you'd have to deal with i, which is an imaginary number that signifies the square root of negative 1.
You don't. If the negative sign is outside the radical, then you take the square root of the number and apply the negative. If the negative sign is inside the radical, you will have an imaginary number.
The square root of a negative number is not real.
you can square a negative number but you can not square root a negative number