初中因式分解100道计算题

因式分解计算题1.)1()1(anam2.22)(16zyx3.22)2()2(baba4.924162xx5.36)(12)(2baba6.1abab7.ab－c＋b－ac8.a2－2ab＋b2－c29.x2＋7x＋610.x2－5x－611.x2－5x＋612.bxbyayax510213.bcacaba214.1yxxy15.ayaxyx2216.2222cbaba17.yyxx392218.yzzyx222219.3223yxyyxx20.181696222aayxyx21.baaxbxbxax2221.abbaba491262223.ybxbyaxa22224424.222yyzxzxyx25.122222abbbaa26.36152aa27.652xx28.672xx29.24142xx30.542xx31.22xx32.1522yy33.24102xx34.6752xx35.101132xx36.2732xx37.317102xx38.101162yy39.bnbmanam40.bxbyayax510241.bcacaba242.1yxxy43.ayaxyx2244.2222cbaba45.yyxx392246.yzzyx222247.3223yxyyxx48.baaxbxbxax2249.181696222aayxyx50.abbaba491262251.92234aaa52.ybxbyaxa22224453.222yyzxzxyx54.122222abbbaa55.)1)(1()2(mmyy56.)2())((abbcaca57.abcbaccabcba2)()()(22258.abccba333359.24142xx60.36152aa61.542xx62.22xx63.1522yy64.24102xx65.101132xx66.6752xx67.2732xx68.317102xx69.101162yy70.221288baba71.2223yxyx72.2286nmnm73.226baba74.22672yxyx75.2322xyyx76.224715yxyx77.8622axxa78.22151112yxyx79.17836xx80.10)(3)(2yxyx81.344)(2baba82.222265xyxyx83.2634422nmnmnm84.3424422yxyxyx85.2222)(10)(23)(5bababa86.10364422yyxxyx87.2222)(2)(11)(12yxyxyx88.abcxcbaabcx)(222289.2910322yxyxyx90.56422yxyx91.67222yxyxyx92.613622yxyxyx93.36355622bababa94.2910322yxyxyx95.613622yxyxyx96.67222yxyxyx97.22227376zyzxzyxyx98.2633xx99.24369yx100.229()4()xyxy因式分解（整式乘法的逆运算）1、因式分解：把一个多项式化成几个整式的积的形式，叫做把这个多项式因式分解，也叫做把这个多项式分解因式。2、因式分解的常用方法（1）提公因式法：)(cbaacab（2）运用公式法：平方差))((22bababa完全平方和222)(2bababa完全平方差222)(2bababa（3）分组分解法：))(()()(dcbadcbdcabdbcadac（4）十字相乘法：))(()(2qapapqaqpa3、因式分解的一般步骤：（1）如果多项式的各项有公因式，那么先提取公因式。（2）在各项提出公因式以后或各项没有公因式的情况下，观察多项式的项数：二项式可以尝试运用公式法分解因式；3项式可以尝试运用公式法、十字相乘法分解因式；4项式及4项式以上的可以尝试分组分解法分解因式（3）分解因式必须分解到每一个因式都不能再分解为止。