?1.5?1.4?4.3?5.2?3.6??6???1?1????32?11??1????0.5??????36??24???2.5?7.3?2.5?(?2.4)?2.5?(?1.7)??3???3???5??1?0.2?????2??5??????12???5??|?5|??1????1????????23???3?23?1??1?2?????2???????4?2??4???－9+5×(－6)－(－4)÷(－8)2?1?11???0.3?3?????2?12?33?4?6x?2x?1?321x?12?3x??12315＋(―1)―15―(―0.25)494(?81)???(?32)49—48×1111(???)436612??4?2???3???5???????4?8??（2m＋2）×4m2(2x＋y)－(2x－y)22(143222xy)·(－12xy)÷(－xy)33[(3x＋2y)(3x－2y)－(x＋2y)(3x－2y)]÷3x先化简后求值：m(m－3)－(m＋3)(m－3)，其中m＝－4．21234×(－3)－13＋(－)－|－4|2－3－［（－2）－（1－2243×）÷（－2）］542x-19=7x+313x?15x?7－=146化简（求值）2(x2y?xy2)?2(x2y?x)?2xy2?2y的值，其?x??2,y?21?21?16?(?)2?4?(?3)2?5x2?6?3x3?x3?2x2?3???先化简，再求值，已知a=1，b=—的值1?212?3323，求多项式?a?2b??2?ab?ab??2?ab?b?32??-2-（-3）×（-1）-（-1）2345-1-（1-0.5）×12×[2-（-3）]3311＋(－22)－3×(－11)322(2)(?3)2?()2??6??2933－2(x－1)＝4－8x＝3－1/2x11148?(???)6412?1?18?6???2??????3?1(?)?323-（-6）-1-（1-0.5）×（-1212）×[2-（-3）]3－2-3×(-2)-(-1)334(－)?23221?|-3|?(?0.25)?()6324?1?111??2481(?2)??(?3)3?32?2?3?(?2)27111[50?(??)?(?6)2]?(?7)29126先化简，再求值：3(x?y)?2(x?y)?2，其中x??1，y?3.4772???(?6)2483化简：(4a?3a)?(2a?a?1)?(2?a?4a)222先化简，再求值：211??31??x?2?x?y2????x?y2?，其中x=－2，y=。323??23??2(x－2)＋2＝x＋12x－15x－1－＝13651?14??2?(?3)26??3(?4)2?(?)?30?(?6)4解方程：4?3(2?x)?5x解方程：2x?1x?2??1323579111315??????261220304256311(??)?8?(?48)461212?1?[3?(?)2?10]23－2+2×[(－1)+|－1|]2210317315(??)?(60??60??60?)5212777231(??)?(?24)34661?6?(?)?2?(?1.5)5?36?4?(?2.5)?(?0.1)?(?3)2?32??(?3)?(?4)???1.5?1.4?4.3?5.2?3.611x??,y?45先化简，再求值：?(2x?3y)?(2x?2y)?1，其中22?1?313???124??8?6?4????24?????5?????513?42???5???4???22?4842?x2?3x?2y2??3?4?3x?2x2??1???3x2y?2?x2y??xy?x2??2x2?4??????6???1?1????32?711??1????0.5??????36??24???2.5?7.3?2.5?(?2.4)?2.5?(?1.7)??3???3???5??1?0.2?????2??5????化简求值.2xy+[7x－3(2x－1)－2xy]＋y，其中x?2,y??。2212??8????1?8?(?10)?(?2)?(?5)??5????5?