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blume imm be and minimur 10. 21. Zs........

blume imm be and minimur 10. 21. Zs...... Z a re the nth roots of unity then the value o 3-2, 3-2 3-Z - is equal to ersed n.3--1 (1) + - (2) 0 - 1 (3) 7.5 +1 + 1 (4) - - - 30_1

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