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vuotlensophan


1) cho pt [TEX]{x}^{3}+\frac{1}{{x}^{3}}=m(x+\frac{1}{x})[/TEX]. xac dinh m de pt co nghiem.
2) giai pt:[TEX]{x}^{4}+{y}^{4}+({x}^{2}+{y}^{2}-2).(2xy-1)+3{x}^{2}{y}^{2}-1=0[/TEX]
moi nguoi giup gium cai di ma......................
2) giai pt:[TEX]{x}^{4}+{y}^{4}+({x}^{2}+{y}^{2}-2).(2xy-1)+3{x}^{2}{y}^{2}-1=0[/TEX]
moi nguoi giup gium cai di ma......................
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