不等式解法 (1).2x2-5x-12≥0 (12).4n2+4n-15<0 (2).3x2-5x-2≥0 (13).6a2+a-35≥0 (3).6x2-13x+5<0 (4).-7x2+19x+6≥0 (5).12x2-13x+3≥0 (6).4x2+24x+27<0 (7).5x²+6x-8<0 (8).2x2+3x+1<0 (9).2y2+y-6<0 (10).6x2-13x+6≥0 (11).3a2-7a-6<0 (14)..-x2-2x+8≥0 (15).x2+3x-10≥0 (16)5x2-8x-13<0 (17)4x2+15x+9<0 (18)15x2+x-2>0 (19)6y2+19y+10≥0 (20)20-9y-20y2<0 (21).x2-x-20≥0 (22).x2+x-6<0
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页眉内容
(31).-2x2-5x+3≥0
(32).6x2+4x-2≥0
(33).x2-2x-3 <0
(34).-x2-6x-8 <0
(35).x2-x-12≥0
(36).x2-7x+10 <0
(37).6x2+x+2≥0
(38).4x2+4x-3≥0
(39).x2-6x-7≥0
(40).x2+6x-7<0
(41).-x2+8x-7≥0
(42).x2+8x+7≥0
(43).-x2+5x-6≥0
(44).x2-5x-6≥0
(45).x2+5x-6<0
(46).x2+5x+6≥0
(47).m²+4m-12<0
(48).6x²-5x-25<0
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