x² - 2x + 5 = 0.
First, identify the value of a, b, and c.
Given:
Formula to be used: [tex]\: \Large \frac{ - b}{a} [/tex]
Solution:
Simply use the given formula to find the sum of the roots.
[tex]\begin{gathered} \frac{ - b}{a} \\ = \frac{ - ( - 2)}{1} \\ = \frac{2}{1} \\ = 2\end{gathered} [/tex]
Thus, 2 is the sum of the roots.