SOLUTION: factor completely 9x^2-27x+20

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Question 321643: factor completely 9x^2-27x+20
Answer by mananth(16946) About Me  (Show Source):
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9x^2-27x+20
..
You will have to find the roots x1 x2 of the equation using the formula
x1= -b +/- sqrt (b^2-4ac) ) /2a
a=9, b=-27, c=20
x1= 27+sqrt((27^2)-720)/18
x1= 1.6666
x2=27-sqrt((27^2)-720)/18
x2=1.3333