Guest: f(x)=x^4-9x^3+12x^2+80x-192
Where is the question? Do you want me to factorise it?
The answer to that is
f(x) = (x-4)
3(x+3)
so the roots of the graph will be, a triple root at x=4 and another root at x=-3
NOW if you want me to explain any of the this you will need to be more specific.
+118654 
