整式加减混合运算

整式加减混合运算 (1) 7-3x-4x2 +4x-8x2 -15 (2) 2(2a2 -9b)-3(,4a2 +b) (3) 8x2-[-3x-(2x2-7x-5)+3]+4x (4) (5x-3y-2xy)-(6x+5y-2xy) (5) 3a2b,[2ab2,2(ab,1.5a2b)+ab]+3ab2 (6)2x,3y)+(5x+4y) (7)(8a,7b),(4a,5b) (8) ,(3x,2y + z),[5x,(x,2y +z ) ,3x] (9)2(7x2+5x,3),3(5x2,3x+2) (10)2b3 +(3ab3,a2b),2(ab2 + b3) (11)(,6x2+5xy),12xy,(2x2,9xy) (12)(x2,2x3 +1),(,1+2x3 + 2x2)，其中x=2 (13)3a,[,2b+(4a,3b)]，其中a=,1，b=3 (14)3ab-4ab+8ab-7ab+ab= (15)7x-(5x-5y)-y= (16)23a3bc2-15ab2c+8abc-24a3bc2-8abc= (17)-7x2+6x+13x2-4x-5x2= (18)2y+(-2y+5)-(3y+2), (19)(2x2-3xy+4y2)+(x2+2xy-3y2)= (20)2a-(3a-2b+2)+(3a-4b-1)= (21) -6x2-7x2+15x2-2x2, (22)2x-(x+3y)-(-x-y)-(x-y), (23)2x+2y-[3x-2(x-y)]= 5-(1-x)-1-(x-1)= (24)已知A=x3-2x2+x-4，B=2x3-5x+3，计算A+B= (25)若a=-0.2，b=0.5，代数式-(|a2b|-|ab2|)的值为 (26)-(2x2-y2)-[2y2-(x2+2xy)]= (27)(-y+6+3y4-y3)-(2y2-3y3+y4-7), (28) (29) (30) (31) (32) 2x2y+3xy2-x2+2xy= 4a2n-an-(3an-2a2n), x-[y-2x-(x+y)] = 3x-[y-(2x+y)]= 3a-(2a-3b)+3(a-2b)-b= 4x2-[7x2-5x-3(1-2x+x2)]= (33) (34) (35) (36) (37) (38) (39) (40) -5xm-xm-(-7xm)+(-3xm)= 当a=-1，b=-2时， [a-(b-c)]-[-b-(-c-a)], 当a=-1，b=1，c=-1时， -[b-2(-5a)]-(-3b+5c), -2(3x+z)-(-6x)+(-5y+3z)= -5an-an+1-(-7an+1)+(-3an), 3a-(2a-4b-6c)+3(-2c+2b)= 9a2+[7a2-2a-(-a2+3a)]= 当2y-x=5时，5(x-2y)2-3(-x+2y)-100= (41) (42) (43) (44) (45) (46) (47) (48) (49) (50) (51) 3ab-4ab+8ab-7ab+ab= 7x-(5x-5y)-y= 23a3bc2-15ab2c+8abc-24a3bc2-8abc= -7x2+6x+13x2-4x-5x2=______. 2y+(-2y+5)-(3y+2)=______. (2x2-3xy+4y2)+(x2+2xy-3y2)=______. 2a-(3a-2b+2)+(3a-4b-1)=______. -6x2-7x2+15x2-2x2=______. 2x-(x+3y)-(-x-y)-(x-y)=______. 2x+2y-[3x-2(x-y)]=______. 5-(1-x)-1-(x-1)=______. (52) (53) (54) (55) (56) ( )+(4xy+7x2-y2)=10x2-xy. (4xy2-2x2y)-( )=x3-2x2y+4xy2+y3. 已知 A=x3-2x2+x-4，B=2x3-5x+3，计算A+B=______. 已知A=x3-2x2+x-4， B=2x3-5x+3，计算A-B=______. 若a=-0.2，b=0.5，代数式-(|a2b|-|ab2|) 的值为______. 25.一个多项式减去3m4-m3-2m+5得-2m4-3m3-2m2-1，那么 这个多项式等于______. (57) (58) 若-3a3b2与5ax-1by+2是同类项，则x=______，y=______. -(2x2-y2)-[2y2-(x2+2xy)]=______. (59) (60) (61) (62) (63) (64) (65) (66) (-y+6+3y4-y3)-(2y2-3y3+y4-7)=______. 化简代数式 4x2-[7x2-5x-3(1-2x+x2)]的结果是______. 2a-b2+c-d3=2a+( )-d3=2a-d3-( )=c-( ). 3a-(2a-3b)+3(a-2b)-b=______. 化简 代数式x-[y-2x-(x+y)]=______. [5a2+( )a-7]+[( )a2-4a+( )]=a2+2a+1. 3x-[y-(2x+y)]=______. 化简|1-x+y|-|x-y|(其中x,0，y,0)等于______. (67) 已知x?y，x+y-|x-y|=______. (68) 已知x,0，y,0，化简|x+y|-|5-x-y|=______. (69) 4a2n-an-(3an-2a2n)=______. (70) 若一个多项式加上-3x2y+2x2-3xy-4得 2x2y+3xy2-x2+2xy，这个多 项式为______. (71) -5xm-xm-(-7xm)+(-3xm)=______. (72) 当a=-1，b=-2时， [a-(b-c)]-[-b-(-c-a)]=______. (73) 当a=-1，b=1，c=-1时， -[b-2(-5a)]-(-3b+5c)=______. (74) -2(3x+z)-(-6x)+(-5y+3z)=______. (75) -5an-an+1-(-7an+1)+(-3an)=______. 则 (76) (77) (78) (79) (80) (81) (82) (83) 3a-(2a-4b-6c)+3(-2c+2b)=______. 9a2+[7a2-2a-(-a2+3a)]=______. 当2y-x=5时，5(x-2y)2-3(-x+2y)-100=______ (4x2-8x+5)-(x3+3x2-6x+2). (0.3x3-x2y+xy2-y3)-(-0.5x3-x2y+0.3xy2). -{2a2b-[3abc-(4ab2-a2b)]}. (5a2b+3a2b2-ab2)-(-2ab2+3a2b2+a2b). (x2-2y2-z2)-(-y2+3x2-z2)+(5x2-y2+2z2). (84) (85) (86) (87) (88) (89) (90) (91) (3a6-a4+2a5-4a3-1)-(2-a+a3-a5-a4). (4a-2b-c)-5a-[8b-2c-(a+b)] (2m-3n)-(3m-2n)+(5n+m). (3a2-4ab-5b2)-(2b2-5a2+2ab)-(-6ab). xy-(2xy-3z)+(3xy-4z). (-3x3+2x2-5x+1)-(5-6x-x2+x3). 3x-(2x-4y-6x)+3(-2z+2y). (-x2+4+3x4-x3)-(x2+2x-x4-5). (92) (93) (94) (95) (96) (97) (98) (99) 若A=5a2-2ab+3b2，B=-2b2+3ab-a2，计算A+B. 已知A=3a2-5a-12， B=2a2+3a-4，求2(A-B). 2m-{-3n+[-4m-(3m-n)]}. 5m2n+(-2m2n)+2mn2-(+m2n). 4(x-y+z)-2(x+y-z)-3(-x-y-z). 2(x2-2xy+y2-3)+(-x2+y2)-(x2+2xy+y2). 2(a2-ab-b2)-3(4a-2b)+2(7a2-4ab+b2). 2x2-{-3x-[4x2-(3x2-x)+(x-x2)]}. (100) -(7x-y-2z)-{[4x-(x-y-z)-3x+z]-x}. (101) (+3a)+(-5a)+(-7a)+(-31a)-(+4a)-(-8a). (102) a3-(a2-a)+(a2-a+1)-(1-a4+a3). (103) 4x-2(x-3)-3[x-3(4-2x)+8]. (104) 3ab-4ab+8ab-7ab+ab=______( (105) 7x-(5x-5y)-y=______( (106) 23a3bc2-15ab2c+8abc-24a3bc2-8abc=______( (107) -7x2+6x+13x2-4x-5x2=______( (108) 2y+(-2y+5)-(3y+2),______( (109) (2x2-3xy+4y2)+(x2+2xy-3y2)=______( (110) 2a-(3a-2b+2)+(3a-4b-1)=______( (111) -6x2-7x2+15x2-2x2,______( (112) 2x-(x+3y)-(-x-y)-(x-y),______( (113) 2x+2y-[3x-2(x-y)]=______( (114) 5-(1-x)-1-(x-1)=______( (115) ( )+(4xy+7x2-y2)=10x2-xy( (116) (4xy2-2x2y)-( )=x3-2x2y+4xy2+y3 (117) 已知A=x3-2x2+x-4，B=2x3-5x+3，计算A+B=______( (118) 已知A=x3-2x2+x-4，B=2x3-5x+3，计算A-B=______( (119) 若a=-0.2，b=0.5，代数式-(|a2b|-|ab2|)的值为______( (120) (一个多项式减去3m4-m3-2m+5得-2m4-3m3-2m2-1，那么这个多项式等于______( (121) (-(2x2-y2)-[2y2-(x2+2xy)]=______( (122) 若-3a3b2与5ax-1by+2是同类项，则x=______，y=______( (123) (-y+6+3y4-y3)-(2y2-3y3+y4-7),______( (124) 化简代数式4x2-[7x2-5x-3(1-2x+x2)]的结果是______( (125) 2a-b2+c-d3=2a+( )-d3=2a-d3-( )=c-( )( (126) 3a-(2a-3b)+3(a-2b)-b=______( (127) 化简代数式x-[y-2x-(x+y)]等于______( (128) [5a2+( )a-7]+[( )a2-4a+( )]=a2+2a+1( (129) (3x-[y-(2x+y)]=______( (130) 4a2n-an-(3an-2a2n),______( (131) 若一个多项式加上-3x2y+2x2-3xy-4得 2x2y+3xy2-x2+2xy， 则这个多项式为______( (132) -5xm-xm-(-7xm)+(-3xm)=______( (133) 当a=-1，b=-2时，[a-(b-c)]-[-b-(-c-a)],______( (134) 当a=-1，b=1，c=-1时， -[b-2(-5a)]-(-3b+5c),______( (135) -2(3x+z)-(-6x)+(-5y+3z)=______( (136) -5an-an+1-(-7an+1)+(-3an),______( (137) 3a-(2a-4b-6c)+3(-2c+2b)=______( (138) 9a2+[7a2-2a-(-a2+3a)]=______( (139) 当2y-x=5时，5(x-2y)2-3(-x+2y)-100=______( (140) 16.-2(3x+z)-(-6x)+(-5y+3z) (141) -5an-an+1-(-7an+1)+(-3an) (142) 2a-(3a-2b+2)+(3a-4b-1) (143) 3a-(2a-4b-6c)+3(-2c+2b) (144) 9a2+[7a2-2a-(-a2+3a)] (145) 2a-(3a-2b+2)+(3a-4b-1) (146) 2a2-(3a2-2b2+2ab+2)+(3a2-4b2-1) (147) 2y2+(2y-5)2-(3y+2)2 (148) 3ab2-4a2b+8a2b-7ab2+3ab (149) 4x2-[7x2-5x-3(1-2x+x2)] (150) 2x+2y-[3x-2(x-y)]