El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\sqrt{\left(x^{2} - 4 x\right) + 3} + \frac{1}{x - 5} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = \frac{7}{2} - \frac{\sqrt{\frac{11}{3} + \frac{26}{9 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}} + 2 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}}}{2} - \frac{\sqrt{\frac{22}{3} - 2 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}} + \frac{6}{\sqrt{\frac{11}{3} + \frac{26}{9 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}} + 2 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}}} - \frac{26}{9 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}}}}{2}$$
$$x_{2} = \frac{7}{2} + \frac{\sqrt{\frac{11}{3} + \frac{26}{9 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}} + 2 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}}}{2} - \frac{\sqrt{\frac{22}{3} - 2 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}} - \frac{6}{\sqrt{\frac{11}{3} + \frac{26}{9 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}} + 2 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}}} - \frac{26}{9 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}}}}{2}$$
$$x_{3} = \frac{7}{2} + \frac{\sqrt{\frac{22}{3} - 2 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}} + \frac{6}{\sqrt{\frac{11}{3} + \frac{26}{9 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}} + 2 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}}} - \frac{26}{9 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}}}}{2} - \frac{\sqrt{\frac{11}{3} + \frac{26}{9 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}} + 2 \sqrt[3]{\frac{157}{108} + \frac{\sqrt{1167} i}{36}}}}{2}$$