初一上册整式计算题(共13页).doc

精选优质文档-倾情为你奉上初一上册整式计算题 (一)填空33ab-4ab+8ab-7ab+ab=_47x-(5x-5y)-y=_523a3bc2-15ab2c+8abc-24a3bc2-8abc=_ 6-7x2+6x+13x2-4x-5x2=_ 72y+(-2y+5)-(3y+2)_ 11(2x2-3xy+4y2)+(x2+2xy-3y2)=_ 122a-(3a-2b+2)+(3a-4b-1)=_ 13-6x2-7x2+15x2-2x2_ 142x-(x+3y)-(-x-y)-(x-y)_ 162x+2y-3x-2(x-y)=_ 175-(1-x)-1-(x-1)=_ 18( )+(4xy+7x2-y2)=10x2-xy 19(4xy2-2x2y)-( )=x3-2x2y+4xy2+y3 21已知A=x3-2x2+x-4，B=2