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Answer:
Explanation:f(x+h)=2h+4hx+2x2+3h+3x−9
f(x)=2x2+3x−9
Plug in the components.f(x+h)−f(x)h=2h2+4hx+2x2+3h+3x−9−(2x2+3x−9)h
Simplify.
4x + 2h + 3