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## Homework Statement

For a real number x, √√(-x) equals :

a) +x b) -x c) complex d) pure imaginary

## Homework Equations

√-1 = i

## The Attempt at a Solution

Here is what i did:

If x is a positive real number then the answer comes out to be x^0.25 * √i (now what is square root of i equal to?)

But if x is a negative real number then the solution would be :

x^0.25

I don't know what to do next, any help would be appreciated.