Toán Lớp 8: d) $x^{4}$ – $2x^{3}$ + $10x^{2}$ – 20x = 0
e) $(3x – 2)^{2}$ + $5+4x^{2}$ – 2(3x – 2) (5 + 4x) = 0
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Toán Lớp 8: d) $x^{4}$ – $2x^{3}$ + $10x^{2}$ – 20x = 0
e) $(3x – 2)^{2}$ + $5+4x^{2}$ – 2(3x – 2) (5 + 4x) = 0
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