7. If x² + y2 + 2? – xy – yz – zx = 0, prove that x =y=z. 8. Evaluate the following using a suitable identity​

Question

7. If x² + y2 + 2? – xy – yz – zx = 0, prove that x =y=z.
8. Evaluate the following using a suitable identity​

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Adalynn 1 month 2021-08-16T18:02:23+00:00 1 Answer 0 views 0

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    2021-08-16T18:03:38+00:00

    Answer:

    you can use the theoram of (a+b+c)^3

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