Question 16521
Start by graphing the function, and determine in what intervals of x the graph is above the x-axis.  Notice that the roots (zeros) are at x= 0, x=1, and x=4, so the graph should cover these values of x and a little more on each side.  Let's say graph from x=-2 to x= 6, and y from -20 to 20.

{{{ graph (300,300,-2,6,-20,20,x*(x-1)*(x-4)^2)}}}


After drawing the graph, notice that the graph is above the x-axis from 
(-inf, 0) union (1,4) union (4, inf).


R^2 at SCC