Evaluate (complex solution)
\sqrt{13}i\approx 3.605551275i
Evaluate
\text{Indeterminate}
Real Part (complex solution)
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\sqrt{-13}
Subtract 4 from -9 to get -13.
\sqrt{13}i
Factor -13=13\left(-1\right). Rewrite the square root of the product \sqrt{13\left(-1\right)} as the product of square roots \sqrt{13}\sqrt{-1}. By definition, the square root of -1 is i.
\sqrt{-13}
Subtract 4 from -9 to get -13.
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