Solve $$$x^{2} - 4 x + 9 = 0$$$ for $$$x$$$ (real roots)

The calculator will try to solve the equation $$$x^{2} - 4 x + 9 = 0$$$ for $$$x$$$ (find the real roots) on the interval $$$\left(-\infty, \infty\right)$$$.

Equation:

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Interval:

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Only real roots?

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