Question 1188217
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I agree with the solution by @MathTherapy.


N = 3 means that the degree of a polynomial is 3.



So, &nbsp;this &nbsp;" 3 " &nbsp;is not a root:  &nbsp;&nbsp;it is &nbsp;<U>the degree of the polynomial.</U>



&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Notice to the visitor: it is entirely &nbsp;YOUR &nbsp;FAULT 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;presenting the problem in an inaccurate and ambiguous way.