If f(x) =x^2-4x+2 and g(x) =3x-7,find (fog) (x)
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Answer:
9x²-54x+79 is the answer
Explanation
fog(x) = f(g(x))= (3x-7)²-4(3x-7)+2
=9x²-42x+49-12x+28+2
=9x²-54x+79
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