Let a and b be complex cube roots of unity. If x=7a+2b and y=2a+7b, then evaluate xy.

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answerhappygod
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Let a and b be complex cube roots of unity. If x=7a+2b and y=2a+7b, then evaluate xy.

Post by answerhappygod »

a) 9
b) 39
c) 45
d) 53
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