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5 January, 10:50

I can't seem to figure this one out, this is all the info that was given:

Given f (x) = x^2 + 2, find f (a+2) - f (a)

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Answers (1)
  1. 5 January, 13:02
    0
    4a + 4

    Step-by-step explanation:

    f (x) = x² + 2

    f (a) = a² + 2

    f (a+2) = (a+2) ² + 2

    f (a+2) - f (a) = (a+2) ² + 2 - (a² + 2)

    f (a+2) - f (a) = a² + 4a + 4 + 2 - a² - 2

    f (a+2) - f (a) = 4a + 4
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