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25 September, 20:17

If f (x) = 2x^2+x find f (x+1)

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  1. 25 September, 21:29
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    f (x + 1) = 2x^2 + 5x + 3.

    Step-by-step explanation:

    We replace the x in the expression for f (x) by x+1:

    f (x+1) = 2 (x + 1) ^2 + x + 1

    = 2 (x^2 + 2x + 1) + x + 1

    = 2x^2 + 4x + 2 + x + 1

    = 2x^2 + 5x + 3.
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