Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Complex Numbers Roots of Unity
If ω ≠ 1 is a cube root of unity, for equation (z - 1)3 + 27 = 0
Statement I: roots are -2, 1 - 3ω, 1 - 3ω2
Statement II: Sum of roots is 0.
Statement III: Product of roots is -26.
Which of the above statement(s) is/are correct.
1
Only I
2
I and III
3
I, II and III
4
More than one of the above
5
None of the above