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16 December, 14:41

If f (x) = x²+3x+5, what is f (3+h) ?

A.) h²+h+23

B.) h²+9h+23

C.) (3+h) ²+8+h

D.) (x²+3x+5) (3+h)

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Answers (1)
  1. 16 December, 15:04
    0
    You have to substitute 3+h for x, then work out the equation.

    (3+h) ^2 + 3 (3+h) + 5 = 9 + 6h + h^2 + 9 + 3h + 5 =

    h^2 + 9h + 23

    Answer B.
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