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सारणिकों के गुणधर्मों का प्रयोग करके सिद्ध कीजिए - `|(1,1,1),(1,1+x,1),(1,1,1+y)|=xy`

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सारणिकों के गुणधर्मों का प्रयोग करके सिद्ध कीजिए - `|(1,1,1),(1,1+x,1),(1,1,1+y)|=xy`
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[ संक्रिया `C_2toC_2-C_1,C_3toC_3-C_1`से ]
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