整式加减混合运算.docx
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整式加减混合运算.docx
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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)4x2-[7x2-5x-3(1-2x+x2)]=
(29)3a-(2a-3b)+3(a-2b)-b=
(30)x-[y-2x-(x+y)]=3x-[y-(2x+y)]=
(31)4a2n-an-(3an-2a2n)=
(32)2x2y+3xy2-x2+2xy=
(33)-5xm-xm-(-7xm)+(-3xm)=
(34)当a=-1,b=-2时,[a-(b-c)]-[-b-(-c-a)]=
(35)当a=-1,b=1,c=-1时,-[b-2(-5a)]-(-3b+5c)=
(36)-2(3x+z)-(-6x)+(-5y+3z)=
(37)-5an-an+1-(-7an+1)+(-3an)=
(38)3a-(2a-4b-6c)+3(-2c+2b)=
(39)9a2+[7a2-2a-(-a2+3a)]=
(40)当2y-x=5时,5(x-2y)2-3(-x+2y)-100=
(41)3ab-4ab+8ab-7ab+ab=
(42)7x-(5x-5y)-y=
(43)23a3bc2-15ab2c+8abc-24a3bc2-8abc=
(44)-7x2+6x+13x2-4x-5x2=______.
(45)2y+(-2y+5)-(3y+2)=______.
(46)(2x2-3xy+4y2)+(x2+2xy-3y2)=______.
(47)2a-(3a-2b+2)+(3a-4b-1)=______.
(48)-6x2-7x2+15x2-2x2=______.
(49)2x-(x+3y)-(-x-y)-(x-y)=______.
(50)2x+2y-[3x-2(x-y)]=______.
(51)5-(1-x)-1-(x-1)=______.
(52)()+(4xy+7x2-y2)=10x2-xy.
(53)(4xy2-2x2y)-()=x3-2x2y+4xy2+y3.
(54)已知A=x3-2x2+x-4,B=2x3-5x+3,计算A+B=______.
(55)已知A=x3-2x2+x-4,B=2x3-5x+3,计算A-B=______.
(56)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)-(2x2-y2)-[2y2-(x2+2xy)]=______.
(58)若-3a3b2与5ax-1by+2是同类项,则x=______,y=______.
(59)(-y+6+3y4-y3)-(2y2-3y3+y4-7)=______.
(60)化简代数式4x2-[7x2-5x-3(1-2x+x2)]的结果是______.
(61)2a-b2+c-d3=2a+()-d3=2a-d3-()=c-().
(62)3a-(2a-3b)+3(a-2b)-b=______.
(63)化简代数式x-[y-2x-(x+y)]=______.
(64)[5a2+()a-7]+[()a2-4a+()]=a2+2a+1.
(65)3x-[y-(2x+y)]=______.
(66)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,则这个多项式为______.
(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)=______.
(76)3a-(2a-4b-6c)+3(-2c+2b)=______.
(77)9a2+[7a2-2a-(-a2+3a)]=______.
(78)当2y-x=5时,5(x-2y)2-3(-x+2y)-100=______
(79)(4x2-8x+5)-(x3+3x2-6x+2).
(80)(0.3x3-x2y+xy2-y3)-(-0.5x3-x2y+0.3xy2).
(81)-{2a2b-[3abc-(4ab2-a2b)]}.
(82)(5a2b+3a2b2-ab2)-(-2ab2+3a2b2+a2b).
(83)(x2-2y2-z2)-(-y2+3x2-z2)+(5x2-y2+2z2).
(84)(3a6-a4+2a5-4a3-1)-(2-a+a3-a5-a4).
(85)(4a-2b-c)-5a-[8b-2c-(a+b)]
(86)(2m-3n)-(3m-2n)+(5n+m).
(87)(3a2-4ab-5b2)-(2b2-5a2+2ab)-(-6ab).
(88)xy-(2xy-3z)+(3xy-4z).
(89)(-3x3+2x2-5x+1)-(5-6x-x2+x3).
(90)3x-(2x-4y-6x)+3(-2z+2y).
(91)(-x2+4+3x4-x3)-(x2+2x-x4-5).
(92)若A=5a2-2ab+3b2,B=-2b2+3ab-a2,计算A+B.
(93)已知A=3a2-5a-12,B=2a2+3a-4,求2(A-B).
(94)2m-{-3n+[-4m-(3m-n)]}.
(95)5m2n+(-2m2n)+2mn2-(+m2n).
(96)4(x-y+z)-2(x+y-z)-3(-x-y-z).
(97)2(x2-2xy+y2-3)+(-x2+y2)-(x2+2xy+y2).
(98)2(a2-ab-b2)-3(4a-2b)+2(7a2-4ab+b2).
(99)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)]
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