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1畅游学海敢搏风浪誓教金榜题名。决战高考,改变命运。凌风破浪击长空,擎天揽日跃龙门分组分解法一、课本巩固练习1.将下列各式分解因式(1)22360xx(2)2256xxyy(3)2120yy(4)23xx2815xyxyy(6)22242415xxxx2.若a,b,c是三角形三边的长,则代数式a2+b2-c2-2ab的值()A.大于零B.小于零C.大于或等于零D.小于或等于零二、基础过关1:⑴1yxxy⑵315523xxx⑶xxyyx21372⑷6)2)(1(xxx⑸)()1(222baxxab2⑹anambnbm304152⑺babaa332⑻ababa6322⑼bxaxabx9101562⑽yxyxx963222:⑴bdacabcdc2⑵2222345aaaaa⑶)4)(2()5)(3()5)(4()3)(2(yxyxyxyxyxyxyxyx⑷aaxaxax45⑸abbybxaayax2:3:yyxx39223yzzyx22223223yxyyxxabbaba4912622baaxbxbxax22181696222aayxyx424422ababa(8)cdabdcba4242222yyxyxx996322xzyzxyzyx6124942224:1.334234xxxx42.8462234xxxx3.1222234aaaa4.644x5:1.343aa4224bbaa3.611623xxx6:1.)()(2222bacddcab2.))(())((babacddcdcab3.)9()(3adbccdab54.33)1(1yxxyxy
本文标题:七年级数学上册9.16分组分解法练习(无答案)沪教版五四制
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