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यदि x = a + b, y = a omega ...

यदि ` x = a + b, y = a omega + b omega ^ 2 , z = a omega ^2 + b omega ` सिद्ध कीजिये कि ` x ^3 + y^ 3 + z ^ 3 = 3 ( a ^ 3 + b ^ 3 ) `

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