Question 460633
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(x)\ =\ x^2\ -\ 5x]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(a)\ =\ a^2\ -\ 5a]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(a\,+\,h)\ = (a^2\ +\ 2ah\ +\ h^2) -\ 5a\ -\ 5h]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(a\,+\,h)\ -\ f(a)\ = (a^2\ +\ 2ah\ +\ h^2) -\ 5a\ -\ 5h\ -\ a^2\ + 5a]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(a\,+\,h)\ -\ f(a)\ = 2ah\ +\ h^2\ -\ 5h]



John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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