Toán Lớp 8: Cho x+y+z=0
CM: 10(x^7 + y^7 + z^7) = 7(x^2+ y^2 + z^2)(x^5 + y^5 + z^5)
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Toán Lớp 8: Cho x+y+z=0
CM: 10(x^7 + y^7 + z^7) = 7(x^2+ y^2 + z^2)(x^5 + y^5 + z^5)
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