Question

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

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

$firstly \: you \: know \: that \\ (mn)(x) = m(x) \times n(x) \\ =( {x}^{2} + 3) \times (5x + 9) \\ = 5 {x}^{3} + 9 {x}^{2} + 15x + 27$