If P(x)=x3+ax2+bx+cP(x) = x^3 + ax^2 + bx + cP(x)=x3+ax2+bx+c has roots r,1/r,1r, 1/r, 1r,1/r,1, what is the relationship between coefficients?
c=1c = 1c=1
a=ba = ba=b
c=ac = ac=a
c=−1c = -1c=−1