Let f(x) = 1 + x + x2 and h ( 0. (a) Is f(2 + 1)

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Let f(x) = 1 + x + x2 and h ( 0.
(a) Is f(2 + 1) = f(2) + f(1)?
(b) Find f(x + h).
(c) Does f(x + h) = f(x) + f(h)?
(d) Does f(x + h) = f(x) + h?
(e) Find
f(x + h) – f(x)

And simplify?

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