Question 788676
F(x)=5x-x^2
F(x+h) = 5(x+h) - (x+h)^2
F(x+h) = 5x + 5h - x^2 - 2hx -h^2
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F(x+h)-F(x) = 5h -2hx -h^2
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[F(x+h)-F(x)]/h = 5 -2x - h
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Cheers,
Stan H.