Level:
Project ID:
9000039105
Source Problem:
Accepted:
1
Clonable:
1
Easy:
0
Find the quadratic equation with real coefficients such that one of the solutions is the complex
number \(x_{1} = 1 + 2\mathrm{i}\).
\(x^{2} - 2x + 5 = 0\)
\(x^{2} - 2x + 3 = 0\)
\(x^{2} + 2x + 5 = 0\)
\(x^{2} + 2x - 3 = 0\)