isi-entrance 2020 Q16

isi-entrance · India · UGA Complex Numbers Arithmetic Modulus Computation

The number of complex roots of the polynomial $z ^ { 5 } - z ^ { 4 } - 1$ which have modulus 1 is
(A) 0
(B) 1
(C) 2
(D) more than 2 .

The number of complex roots of the polynomial $z ^ { 5 } - z ^ { 4 } - 1$ which have modulus 1 is\\
(A) 0\\
(B) 1\\
(C) 2\\
(D) more than 2 .