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trang võ hoàng đoan
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trang võ hoàng đoan
asked a question
05/10/2017 at 08:07
Given a+b+c=0, calculate the value of expression:
Q=(a
2
+b
2
+c
2
):((b-c)
2
+(c-a)
2
+(a-b)
2
)
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