How do I show that [math]|\alpha| \leq max[/math] {[math]1, \sum_{i=0}^{n-1} |a_i|[/math]} where [math]\alpha [/math] is zero of [math]p(x)=\sum_{i=0}^{n} a_i x^i,[/math] where [math]a_i[/math] may be complex and [math]a_n =1[/math]?