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1578139394649第1页共11页因式分解中考经典试题回顾一一、选择题1.(2011浙江金华,3,3分)下列各式能用完全平方式进行分解因式的是()A.x2+1B.x2+2x-1C.x2+x+1D.x2+4x+4【答案】D2.(2011山东济宁,4,3分)把代数式322363xxyxy分解因式,结果正确的是()A.(3)(3)xxyxyB.223(2)xxxyyC.2(3)xxyD.23()xxy【答案】D3.(2011浙江丽水,3,3分)下列各式能用完全平方式进行分解因式的是()A.x2+1B.x2+2x-1C.x2+x+1D.x2+4x+4【答案】D4.(2011台湾全区,5)下列四个多项式,哪一个是3522xx的因式?A.2x-1B.2x-3C.x-1D.x-3【答案】A5.(2011江苏无锡,3,3分)分解因式2x2−4x+2的最终结果是()A.2x(x−2)B.2(x2−2x+1)C.2(x−1)2D.(2x−2)2【答案】C6.(2011河北,3,2分)下列分解因式正确的是()A.)(23a1-aaa-B.2a-4b+2=2(a-2b)C.222-a4-aD.221-a1a2-a1578139394649第2页共11页【答案】D二、填空题1.(2011浙江省舟山,13,4分)分解因式:822x=.【答案】2(x+2)(x-2)2.(2011安徽,11,5分)因式分解:a2b+2ab+b=.【答案】b(a+1)23.(2011安徽芜湖,12,5分)因式分解3222xxyxy=.【答案】2()xxy4.(2011福建福州,11,4分)分解因式:225x.【答案】(5)(5)xx5.(2011江苏扬州,11,3分)因式分解:xxx4423=【答案】x(x-2)26.(2011山东滨州,13,4分)分解因式:24x______.【答案】(x+2)(x-2)7.(2011山东菏泽,10,3分)因式分解:2a2-4a+2=______________.【答案】22(1a)8.(2011山东威海,16,3分)分解因式:2168()()xyxy.【答案】(x-y-4)29.(2011宁波市,14,3分)因式分解:xy-y=【答案】y(x-1)1578139394649第3页共11页10.(2011浙江绍兴,11,5分)分解因式:2xx.【答案】1xx11.(2011浙江台州,13,5分)因式分解:122aa=【答案】(a+1)212.(2011浙江温州,11,5分)因式分解:21a,【答案】(a+l)(a-l)13.(2011浙江省嘉兴,13,5分)分解因式:822x=.【答案】2(x+2)(x-2)14.(2011江西,10,3分)因式分解:x3-x=.【答案】x(x+1)(x-1)15.(2011湖南常德,2,3分)分解因式:24_________.xx【答案】4xx16.(2011湖南邵阳,10,3分)因式分解:a2-b2=________。【答案】(a+b)(a-b)。17.(2011江苏连云港,11,3分)分解因式:x2-9=______.【答案】(x+3)(x-3)18.(2011江苏苏州,11,3分)分解因式:a2-9=_______________________________.【答案】(a+3)(a-3)19.(2011江苏泰州,10,3分)分解因式:2a2-4a=.【答案】2a(a-2)1578139394649第4页共11页20.(2011山东潍坊,13,3分)分解因式:321aaa=_________________【答案】2(1)(1)aa21.(2011四川成都,11,4分)分解因式:122xx=.【答案】2)1(x.22.(2011四川广安,11,3分)分解因式:218x=___________________【答案】(9)(9)xx23.(2011四川宜宾,9,3分)分解因式:142x____________________.【答案】(2x+1)(2x-1)24.(2011重庆江津,12,4分)因式:2x3-x2=______________.【答案】x2(2x-1)·25.(2011江西南昌,10,3分)因式分解:x3-x=.【答案】x(x+1)(x-1)26.(2011湖南怀化,9,3分)因式分解:a2-9=_____________.【答案】a2-9=(a+3)(a-3)27.(2011江苏淮安,11,3分)分解因式:ax+ay=.【答案】a(x+y)28.(2011江苏南通,16,3分)分解因式:3m(2x-y)2-3mn2=▲【答案】3m(2x-y+n)(2x—y-n)29.(2011山东临沂,15,3分)分解因式:9a-ab2=.【答案】a(3+b(3-b)1578139394649第5页共11页30.(2011上海,8,4分)因式分解:229xy_______________.【答案】(+3)(3)xyxy31.(2011四川绵阳13,4)因式分解:a3-a=____【答案】a(a+1)(a-1)32.(2011四川凉山州,14,4分)分解因式:32214aabab。【答案】212aab33.(2011安徽芜湖,12,5分)因式分解3222xxyxy=.【答案】2()xxy34.(2011湖北黄冈,2,3分)分解因式8a2-2=____________________________.【答案】2(2a+1)(2a-1)35.(2011湖北黄石,11,3分)分解因式:2x2-8=。【答案】2(x+2)(x-2)36.(2011湖南邵阳,10,3分)因式分解:a2-b2=________。【答案】(a+b)(a-b)。37.(2011湖南常德,2,3分)分解因式:24_________.xx【答案】4xx38.(2011湖南永州,3,3分)分解因式:mm2=________________.【答案】)1(mm39.(2011山东东营,14,4分)分解因式:22xyxyy=________________________________.1578139394649第6页共11页【答案】2(1)yx40.(20011江苏镇江,10,2分)计算:21x=______;分解因式:29x=_______.答案:221xx,(x+3)(x-3)41.(2011广东中山,7,4分)因式分解22abacbc.【答案】()()ababc42.(2011湖北鄂州,2,3分)分解因式8a2-2=____________________________.【答案】2(2a+1)(2a-1)43.(2011广东湛江13,4分)分解因式:23xx.【答案】(3)xx44.(2011贵州安顺,11,4分)因式分解:x3-9x=.【答案】x(x-3)(x+3)45.(2011湖南湘潭市,9,3分)因式分解:12x=_____________.【答案】(x+1)(x-1)三、解答题1.(2011广东广州市,19,10分)分解因式8(x2-2y2)-x(7x+y)+xy.【答案】8(x2-2y2)-x(7x+y)+xy=8x2-16y2-7x2-xy+xy=x2-16y2=(x+4y)(x-4y)1578139394649第7页共11页2.(2011浙江湖州,18,6)8因式分解:39aa【答案】解:原式=2(9)(3)(3)aaaaa因式分解B一、选择题1.(2011广西南宁,6,3分)把多项式x3—4x分解因式所得的结果是:(A)x(x2-4)(B)x(x+4)(x-4)(C)x(x+2)(x-2)(D)(x+2)(x-2)【答案】C2.(2011广西梧州,6,3分)因式分解x2y-4y的正确结果是(A)y(x+2)(x-2)(B)y(x+4)(x-4)(C)y(x2-4)(D)y(x-2)2【答案】A3.二、填空题1.(2011福建泉州,9,4分)分解因式:162x.1578139394649第8页共11页【答案】44xx2.(2011广东湛江,13,4分)分解因式:23xx.【答案】(3)xx3.(2011广东珠海,6,4分)分解因式:ax2-4a.【答案】a(x+2)(x-2)4.(2011广西桂林,13,3分)因式分解:a2+2a=______.【答案】a(a+2)5.(2011黑龙江省哈尔滨市,13,3分)把多项式2a4a22分解因式的结果是_。【答案】21a2)(6.(2011湖北十堰,11,3分)分解因式:x2-2x=.【答案】x(x-2)7.(2011湖北随州,2,3分)分解因式8a2-2=____________________________.【答案】2(2a+1)(2a-1)8.(湖南湘西,4,3分)分解因式:22xy=__________.【答案】(x+y)(x-y)9.(2011江苏常州,10,2分)计算:21x=______;分解因式:29x=_______.【答案】221xx,(x+3)(x-3)10.(2011广东深圳,13,4分)分解因式:a3-a=____________.【答案】(1)(1)aaa1578139394649第9页共11页11.(2011陕西,13,3分)分解因式:aabab442.【答案】2)2(ba12.(2010湖南长沙,11,3分)分解因式:a2-b2=_______________.【答案】(a+b)(a-b)13.(2011山东莱芜,14,4分)分解因式(a+b)3-4(a+b)=__________________________.【答案】22bababa14.(2011北京市,10,4分)分解因式:321025aaa______________.【答案】a(a-5)215.(2011广东清远,12,3分)分解因式:226xx.【答案】2x(x-3)16.(2011广西桂林,13,3分)因式分解:a2+2a=______.【答案】2aa17.(2011黑龙江省哈尔滨市,13,3分)把多项式2a4a22分解因式的结果是_。【答案】21a2)(1.7×10518.(2011黑龙江绥化,4,3分)因式分解:22363yxyx=.【答案】23yx19.(2011湖北潜江天门仙桃江汉油田,11,3分)分解因式:962aa.【答案】(a-3)220.(2011湖北省随州市,12,4分)分解因式8a2-2=1578139394649第10页共11页【答案】2(2a+1)(2a-1)21.(2011江西b卷,13,3分)因式分解:3a+12a2+12a3=.【答案】2312aa22.(2011山东济南,17,3分)分解因式:269aa=__________________.【答案】2(3)a23.(2011四川眉山,13,3分)因式分解:x3-4xy2=.【答案】x(x+2y)(x-2y)24.(2011广西来宾,15,3分)分解因式:1-2x=.【答案】(1+x)(1-x)25.(2011福建三明,12,4分)分解因式:a2-4a+4=【答案】(a-2)226.(2011湖北鄂州,2,3分)分解因式8a2-2=____________________________.【答案】2(2a+1)(2a-1)27.(2011昭通,12,3)分解因式:2732a__________。【答案】)3)(3(3aa28.(2011内蒙古赤峰,9,3分)分解因式:269aa_____________。【答案】2(3)a29.(2011四川雅安14,3分)分解因式:xxx9623;【答案】x(x
本文标题:因式分解中考经典试题回顾一A
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