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7 September, 20:13

Find f (2) and f (a+h) when f (x) = 3x^2+2x+4

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  1. 7 September, 20:37
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    F (2) = 3 (2) ^2 + 2 (2) + 4

    = 3 (4) + 4 + 4

    = 12 + 8

    f (2) = 20

    f (a+h) = 3 (a+h) ^2 + 2 (a+h) + 4

    = 3 (a^2 + 2ah + h^2) + 2a + 2h + 4

    f (a+h) = 3a^2 + 6ah + 3h^2 + 2a + 2h + 4
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