यदि आरगैण्ड तल में किसी समबाहुए त्र...

यदि आरगैण्ड तल में किसी समबाहुए त्रिभुज के शीर्ष ` z _ 1 , z _ 2 , z _ 3 ` हो, तो साबित कीजिये कि
` z _ 1 ^ 2 + z _ 2 ^ 2 + z _ 3^ 2 = z _ 1 z _ 2 + z _ 2 z _ 3 + z _ 3 z _1 `

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