moduct and equilities uncurious m(x)=x^2+4x n(x)=x (mn)(x)= x^2+4x(x) (x^2+4x)(x) COMPLETE Which is equal to: x^3+4x^2 5x^2 4x^4 RETRYV

To find the product of the functions $m(x)$ and $n(x)$, we need to multiply them together. <br /><br />Given:<br />$m(x) = x^2 + 4x$<br />$n(x) = x$<br /><br />The product $(mn)(x)$ is calculated as follows:<br />$(mn)(x) = m(x) \cdot n(x)$<br /><br />Substituting the given functions:<br />$(mn)(x) = (x^2 + 4x) \cdot x$<br /><br />Now, distribute $x$ to each term inside the parentheses:<br />$(mn)(x) = x^3 + 4x^2$<br /><br />Therefore, the correct answer is:<br />$x^3 + 4x^2$