SOLUTION: Evaluate √(-5+12i) (or) (-5+12i)� ?

Question 1098569: Evaluate √(-5+12i) (or) (-5+12i)� ?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let , so then

So then in this case,
1.
2.
From 2,

Substituting into 1,

Use a substitution,

So there are two u solutions,

Since we assume that and are real numbers we only solve for this solution.
The other would lead to an imaginary number.
So then when ,

When ,

,
From eq. 2, the product is positive so a and b have the same sign.
and

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SOLUTION: Evaluate &#8730;(-5+12i) (or) (-5+12i)� ?