Let's graph the polynomial function  .
Enter this function as Y1, then try a standard window.
A comprehensive graph of a polynomial function should show all intercepts and all relative maxima or minima (turning points). With a standard window we can see one x-intercept and the y-intercept. Because this is a fourth degree polynomial there must be another x-intercept, probably to the right. |
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(
0.005 
4 
0.115
0.807 
