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27 September, 09:45

Given f (x) = x² + 8x and g (x) = x4, choose

the expression for (fºg) (x).

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Answers (1)
  1. 27 September, 12:04
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    Answer: fg (x) = 16x² + 32x

    Method:

    First you must substitute g (x) into f (x).

    Where the x is in the equation f (x) substitute the equation of g (x).

    So it should be fg (x) = (x4) ² + 8 (x4).

    Then simplify the equation to

    fg (x) = 16x² + 32x
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