1、初二数学整式乘除计算题专练一计算题1.( )( )mnmn2.( 2x 5)(2x 5) 3( )()abab4.(23)(32)xyxy（2x-3y）(3y+2x)5.(67)(34)abba6.(64)(32)x x7. ( )( )abcabc8.1111( )( )2323abcabc9.(234)( )xyzxyz10. ( )( )pqmpqm11. 2(2)(2)(4)xxx12. 2(3)(3)(9)xxx13. 22()(2)()ababab14. 2(23)mn15. 2 2(34)9()mnm16. 2( )xy17. 2(34)abc18. 2 2(3)(3)abba1
2、9. 22 2()(2)abab20 2( )abc21. 2111( )234xyz22.(a5) 2(a+6)(a6)23、 22(1)4(1)xx24、 22 2(49)8(3)mnmn1. 24()mxx2. 844xxx3. 522()aaa4. 22 2()()abaab5. 2232()()xyxyxy6. 4322(6)()aaaa7. 323(46)2xyxyxyxy8. 6 2()()abba9. 6223aa10. 5 312(0.5)211. 342232()()ababab12. 2222(3)(5)xyxyxy13.解方程：2 2(1)1(1)1x x解方程: 2 2()6xxxx14、简便计算： 29815.已知 ,4ab,求221ab2()16.已知 ,221xy,求 2 28yxy 2()xy17.已知 ,15a求 的值 .441aa
