(a + b + c) { (a - b) 2 + (b - c) 2 + (c - a) 2 } இன் மதிப்பு என்ன?

1
2a 3 + 2b 3 + 2c 3
2
2a 3 + 2b 3 + 2c 3 - 6abc
3
3abc
4
6abc

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