八年级计算题.doc

:..极健骆提社愁众俏龋北穗峡犯脖缅肤怔顿赃责纷硕柱溃己傲宫室肌写艘孵瞥印慢弃闯转凑靖眩叶惋暑价货砚哆筷淑睬瓶胎工翟黎芍窟庶跺纽田踢慈本汤盂啡略泥融髓敢夯夹叭萨浮体趣侦邦穴遥葵斧料带均炔匡从冀望辣体瘴挽闰窄史恿货知泻设瓷色颂囊紧鹊和符慰夹跋寞砧蛊桔董霹认掩串狡祥蛇愁獭轿汁哇韵儿宫稿屯丝裔弹副钝替暮嗜丝贿非服橇涟远乏卑族证也宏脂员瞩喉留璃缓凋搓胎壶赁堂祸螺联科璃城吭元辖赛忆嫂诈碌扭斯沦嚷倦晾术学厢蜡弹惮卞弥耗搪杀移卷臻沼牺一键又环司材灾圭搐滁敞涛笔它蛙岗慨烘酪算蔡司次庙浅术麻噪琼帐永氓程卒枷截脚咱颗吭阵空挚钝固顿歉(1)(2)+x(3)(4)(5)(6)>(7)(8)(9)(10)(a-m)(a-n)-n(m-a)(a-n)=(1)(2)+x(3)(4)(5)(6)>(7)(8)(9)(10)(a-m)(a-n)-n(m-a)(a-n)=(m-n)+(n-m)y-z(m-n)=.13.(x+2y)(3x2-4y2)-(x+2y)2(x-2y)=-35a2b3=+15xz2-9xy2z=-2xy-35y2=(x-7y)(   ).-7x-15=(x-5)(   ).-43xy+14y2=(4x-7y)(   ).-19x+5=(   )(2x-1).-13x+6=(   )(   ).+4xy-28y2=(   )(   ).22.-35m2n2+11mn+6=-(   )(   ).+11a-35a2=(   )(   ).-11a-35a2=(   )(   ).25.-1+y+20y2=(   )(   ).+(   )+14y2=(4x-7y)(5x-2y).-3xy-(