Polynomial's calculator
Note 1: if you wish to find the ROOTS of a polynomial you must equal the equation to ZERO. For example, write x^2-1= 0 and DO NOT just write x^2-1. Alternatively, enter: roots(x^2-1)
Note 2: To find a polynomial given the roots (for example if the roots are -1,i,-i) enter POLY(-1;i;-i)