Common roots of the equation `z^(3)+2z^(2)+2z+1=0` and `z^(2020)+z^(2018)+1=0`, are

The common roots of the equations z^(3)+2x^(2)+2z+1=0 and z^(2017)+z^(2018)+1=0 are

Sum of common roots of the equations z^(3) + 2z^(2) + 2z + 1 =0 and z^(1985) + z^(100) + 1=0 is

Sum of common roots of the equations z^(3) + 2z^(2) + 2z + 1 =0 and z^(1985) + z^(100) + 1=0 is

The common roots of the equation z^(3)+2z^(2)+2z+1=0 and z^(1985)+z^(100)+1=0 are: (A) 1,omega(B)1,omega^(2)(C)omega,omega^(2)(D) none of these

The common roots of the equation z^(3)+2z^(2)+2z+1=0,z^(2014)+z^(2015)+1=0