Question

quais são as raízes da equação x² -6x - 10 = 0 ​

Answer 1

${x}^{2} - 6x - 10 = 0 \\ x = \frac{ - ( - 6) + - \sqrt{( - 6 {) }^{2} - 4 \times1 \times ( - 10) } }{2 \times 1} \\ x = \frac{6 + - \sqrt{76} }{2} \\ x = \frac{6 + 2 \sqrt{19} }{2} \\ x = 3 + \sqrt{ 19 } \\ x = 3 - \sqrt{19} \\ x1 = 3 - \sqrt{19} \\ x2 = 3 + \sqrt{19}$