re cube roots of unity, tl w?) is

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter1: Equations And Inequalities
Section1.4: Quadratic Equations
Problem 103E: Use the discriminant to determine the number and type of roots. Do not solve the equation....
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If w and w2 are cube roots of unity, then (2 - w +
2w2)(2 + 2w - w?) is
1. 0
2. -9
3. 8
4. 9
Transcribed Image Text:If w and w2 are cube roots of unity, then (2 - w + 2w2)(2 + 2w - w?) is 1. 0 2. -9 3. 8 4. 9
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