How do I write x in terms of y in a quartic equation I have a few quartic equations that are in the general form, $$y = ax^4 + bx^3 + cx^2 + dx + e$$Is there any way I can write $x$ in terms of $y$?

For example, one of the equations is: 
$$y = -0.000439x^4 + 0.052x^3 - 1.56x^2 + 17.57x +14.46$$

And I need to separate the $x$ variable. 
Is it possible? 
Thanks for the help.
Since y(x) is not generally invertible, there's no closed form for x in terms of y. To show it is not invertible, use the horizontal line test, which fails for some choices of the constants.
Since y(x) is not generally invertible, there's no closed form for x in terms of y. To show it is not invertible, use the horizontal line test, which fails for some choices of the constants.