Since there is no general formula for quintic equations, is there for a formula for quintic equations of the type:
$$ax^5+bx^3+cx+d=0$$
or is it at least possible to solve: $$16x^5-20x^3+5x-q=0$$
in terms of q? I would really appreciate your help and if this can be solved for q, I'll be sure to come up with some very interesting posts and articles for all of you.