Forpersonaluseonlyinstudyandresearch;mercialuse15、3x2-[7x-(4x-3)-2x2]a2b-[2(a2b-2a2c)-(2bc+a2c)];17、-2y3+(3xy2-x2y)-2(xy2-y3).18、2(2x-3y)-(3x+2y+1)19、-(3a2-4ab)+[a2-2(2a+2ab)].20、5m-7n-8p+5n-9m-p;(5x2y-7xy2)-(xy2-3x2y);22、3(-3a2-2a)-[a2-2(5a-4a2+1)-3a].23、3a2-9a+5-(-7a2+10a-5);24、-3a2b-(2ab2-a2b)-(2a2b+4ab2).(5a-3a2+1)-(4a3-3a2);26、-2(ab-3a2)-[2b2-(5ab+a2)+2ab]27、(8xy-x2+y2)+(-y2+x2-8xy);28、(2x2-+3x)-4(x-x2+);整式的加减专项练****100题1、3(a+5b)-2(b-a)2、3a-(2b-a)+b3、2(2a2+9b)+3(-5a2-4b)(x3-2y3-3x2y)-(3x3-3y3-7x2y).....................................5、3x2-[7x-(4x-3)-2x2](2xy-y)-(-y+yx)7、5(a2b-3ab2)-2(a2b-7ab)(-2ab+3a)-2(2a-b)+2ab9、(7m2n-5mn)-(4m2n-5mn)10、(5a2+2a-1)-4(3-8a+2a2).42、3x-[5x+(3x-2)];43、(3a2b-ab2)-(ab2+3a2b)44、45、(-x2+5+4x3)+(-x3+5x-4)46、(5a2-2a+3)-(1-2a+a2)+3(-1+3a-a2).47、5(3a2b-ab2)-4(-ab2+3a2b).48、4a2+2(3ab-2a2)-(7ab-1).49、xy+(-xy)-2xy2-(-3y2x)50、5a2-[a2-(5a2-2a)-2(a2-3a)]51、5m-7n-8p+5n-9m+8p53、3x2y-[2x2y-3(2xy-x2y)-xy]54、3x2-[5x-4(x2-1)]+5x255、2a3b-a3b-a2b+a2b-ab2;-3x2y+3xy2+2x2y-2xy2;2(a-1)-(2a-3)+、-2(ab-3a2)-[2b2-(5ab+a2)+2ab]14、(x2-xy+y)-3(x2+xy-2y)29、3x2-[7x-(4x-3)-2x2].30、5a+(4b-3a)-(-3a+b);31、(3a2-3ab+2b2)+(a2+2ab-2b2);32、2a2b+2ab2-[2(a2b-1)+2ab2+2].33、(2a2-1+2a)-3(a-1+a2);34、2(x2-xy)-3(2x2-3xy)-2[x2-(2x2-xy+y2)].-ab+a2b+ab+(-a2b)-136、(8xy-x2+y2)+(-y2+x2-8xy);37、2x-(3x-2y+3)-(5y-2);38、-(3a+2b)+(4a-3b+1)-(2a-b-3)39、4x3-(-6x3)+(-9x3)40、3-2xy+2yx2+6xy-4x2y41、1-3(2ab+a)十
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