Consider the function $$f(x)=\frac{x^4+ 4 x^3 - 12 x^2}{ 3 x + 6}$$

Find the vertical asymptote(s). If there is more than one vertical asymptote give a list of the $x$ - values separated by commas.

$x =$

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If this function has a horizontal asymptote, give its $y$-value. If there is no horizontal asymptote, type in None .

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Find the $x$ -intercept(s). If there is more than one $x$ -intercept give a list of the $x$ -values separated by commas.

$x =$

Find the $y$ -intercept

$y =$