f(x) = x2 - 5x + 6 g(x) = x + 3 A) x2 + x B) x2 - 4x + 9 C) x2 - 5x + 9 <my choice D) x3 - 5x2 - 9x + 18
= (x+3)^2-5(x+3)+6 = x^2+x
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