Solve for x (complex solution)
x=\sqrt{357}i\approx 18.894443628i
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\sqrt{4-19^{2}}=x
Calculate 2 to the power of 2 and get 4.
\sqrt{4-361}=x
Calculate 19 to the power of 2 and get 361.
\sqrt{-357}=x
Subtract 361 from 4 to get -357.
\sqrt{357}i=x
Factor -357=357\left(-1\right). Rewrite the square root of the product \sqrt{357\left(-1\right)} as the product of square roots \sqrt{357}\sqrt{-1}. By definition, the square root of -1 is i.
x=\sqrt{357}i
Swap sides so that all variable terms are on the left hand side.
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