Solve a quadratic equation with complex roots.
\( \text{Solve the quadratic equation: } x^2 - 4x + 5 = 0 \)
Choose one option:
Remember that negative discriminant gives imaginary part \(i\sqrt{|D|}\).
Discriminant \(b^2-4ac<0\). Use formula to get \(x=2\pm i\).
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