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1.
Which of the following equations has the sum of its roots?

x² - 5x + 6 = 0

x² - 5x - 6 = 0

x² + 5x + 6 = 0

x² + 5x - 6 = 0

x² - 5x + 6 = 0

x² - 5x + 6 = 0
The sum of roots $open parentheses straight alpha space plus space straight beta close parentheses$ is given by,
$equals negative straight b over straight a space equals space fraction numerator negative left parenthesis negative 5 right parenthesis over denominator 1 end fraction space equals space 5$