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26 May, 14:58

If m (x) = x2+3 and n (x) = 5x+9 which expression is equivalent to (mn) (x)

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  1. 26 May, 16:11
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    mn (x) = 5x³ + 9x² + 15x + 27

    Step-by-step explanation:

    mn (x) = m (x) * n (x)

    mn (x) = (x² + 3) (5x + 9)

    We can evaluate this expression by using the FOIL method.

    First terms: x² * 5x = 5x³

    Outer terms: x² * 9 = + 9x²

    Inner terms: 3 * 5x = + 15x

    Last terms: 3 * 9 = + 27

    mn (x) = 5x³ + 9x² + 15x + 27
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