Phương trình và bất phương trình

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Phương trình và bất phương trình

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Vềph ơngtrìnhvàbấtph ơngtrình A.Mởđầu: 1.Nhữngđiềuphảinóingay: !"#$"#%&'%(%)&*+,% /&01$"23&*-(4&"5$-(6"78+9-$"23&*-(4&"5+$-(6:-(2;< +9-=>+,%. /&<3+#&HI"%IDx-2u&*"4&"-",&"</<=ỹ &ă&*<3+#&?,-y%+,8(7J7DHF8 1.Ph ơngtrình(bptr)bậcnhất: dy%lh?-(o&*^.@%&,8="%`@8<"."/J?9-<ă&+#&5$"U&&"%1D-(.&*&"N&* Hc7-(ẻ. R:Đ%1D<3+#&<U&+%A-K 5-6J*%#%-"./-K 5lh?+#&*R6 5-6^DB-^VK r";^,5q60,5-6-"40y-2&"2&*5K6-"4<U&JS<"%75?ẫDJS$"F&-"c<6 6= 0 2.Ph ơngtrìnhđathứcbậccaohơn1: ĐF8^,&1&-#&*<".</<-"I^.@%$-("78+$-(<'-"I*%#%H2T<J7D&,8 M

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