Question 982274

how do I find the sum of the solutions of the equation x^2-9x+20=0
<pre>{{{x^2 - 9x + 20 = 0}}}
Sum of roots/zeroes/solutions to a quadratic equation is: {{{- b/a}}}
With a = 1, and b = - 9, 
Sum of roots/zeroes/solutions to this quadratic equation is: {{{(-  - 9/1)}}}, or {{{highlight_green(9)}}}