Posted by mema on Thursday, June 9, 2011 at 9:07pm.
9x^2-36x+36 = 9
9x^2-36x+27 = 0
Factor. Get two factors from each of the end terms that will add to the value of the middle term.
(3x-9)(3x-3) = 0
Set each factor = 0 and solve.
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