Question 1056898
The factors for -3,-2,2, and -1 are 
(x+3)(x^2-4)(x+1)=x^4+4x^3-x^2-16x-12
Now multiply everything by 3 which will not change the roots but will make the coefficient of x^2 -3.
3x^4+12x^3-3x^2-48x-36
{{{graph(300,300,-10,10,-100,20,3x^4+12x^3-3x^2-48x-36)}}}