algebra
posted by mema .
Given the quadratic function f(x)=9x^236x+36 find a value of x such that f(x)=9

9x^236x+36 = 9
9x^236x+27 = 0
Factor. Get two factors from each of the end terms that will add to the value of the middle term.
(3x9)(3x3) = 0
Set each factor = 0 and solve.
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