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23 February, 10:45

If f (x) = 3x+2 and g (x) = x^2 + 1 which expression is equivalent to (f•g) (x)

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  1. 23 February, 10:50
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    (f · g) (x) = f (x) · g (x)

    f (x) = 3x + 2; g (x) = x^2 + 1

    (f · g) (x) = (3x + 2) (x^2 + 1) = 3x^3 + 3x + 2x^2 + 2 = 3x^3 + 2x^2 + 3x + 2
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