What must be subtracted from a square + b square + c square - 3 abc to get 2a square - b square - 3c square + abc . guys it's urgent please and notice that square 2 wala sq.ok
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a2+b2+c2-3abc=(a+b+c)(a2-b2-c2-2ab-2bc-2ca)
=(0)(a2-b2-c2-2ab-2bc-2ca)(a+b+c=0)
=0
a2+b2+c2=-3abc
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Step-by-step explanation:
54y
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