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Toán Lớp 7: Giúp mình với!!!! CMR:(a²+b²+c²-ab-bc-ca)(a+b+c)=a(a²=bc)+b(b²-ca)+c(c²-ab)

Home/ Toán Lớp 7: Giúp mình với!!!! CMR:(a²+b²+c²-ab-bc-ca)(a+b+c)=a(a²=bc)+b(b²-ca)+c(c²-ab)

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