1,z1,z2,z3,……,zn−1 are the nth roots of unity, then the value of – InterviewSolution

1.	1,z1,z2,z3,……,zn−1 are the nth roots of unity, then the value of 13−z1+13−z2+……+13−zn−1 is equal to
Answer» $1, z_{1}, z_{2}, z_{3}, \dots \dots, z_{n - 1}$ are the nth roots of unity, then the value of $\frac{1}{3 - z_{1}} + \frac{1}{3 - z_{2}} + \dots \dots + \frac{1}{3 - z_{n - 1}}$ is equal to

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