Question

求整式计算题答案，题如下。

劝解自己做，罢免，不需要，谢谢。
3ab-4ab+8ab-7ab+ab=______．

4．7x-(5x-5y)-y=______．

5．23a3bc2-15ab2c+8abc-24a3bc2-8abc=______．

6．-7x2+6x+13x2-4x-5x2=______．

7．2y+(-2y+5)-(3y+2)＝______．

11．(2x2-3xy+4y2)+(x2+2xy-3y2)=______．

12．2a-(3a-2b+2)+(3a-4b-1)=______．

13．-6x2-7x2+15x2-2x2＝______．

14．2x-(x+3y)-(-x-y)-(x-y)＝______．

16．2x+2y-[3x-2(x-y)]=______．

17．5-(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=2x3-5x+3，计算A+B=______．

22．已知A=x3-2x2+x-4，B=2x3-5x+3，计算A-B=______．

23．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______．

26．-(2x2-y2)-[2y2-(x2+2xy)]=______．

27．若-3a3b2与5ax-1by+2是同类项，则x=______，y=______．

28．(-y+6+3y4-y3)-(2y2-3y3+y4-7)＝______．

29．化简代数式4x2-[7x2-5x-3(1-2x+x2)]的结果是______．

30．2a-b2+c-d3=2a+( )-d3=2a-d3-( )=c-( )．

Answer 1

3ab-4ab+8ab-7ab+ab=__ab____．

4．7x-(5x-5y)-y=___2x+4y___．

5．23a3bc2-15ab2c+8abc-24a3bc2-8abc=__-a3bc2-15ab2c____．

6．-7x2+6x+13x2-4x-5x2=__x2+2x____．

7．2y+(-2y+5)-(3y+2)＝__-3y+7____．

11．(2x2-3xy+4y2)+(x2+2xy-3y2)=_x2-xy+y2_____．

12．2a-(3a-2b+2)+(3a-4b-1)=__2a-2b-3____．

13．-6x2-7x2+15x2-2x2＝___0___．

14．2x-(x+3y)-(-x-y)-(x-y)＝___x-y___．

16．2x+2y-[3x-2(x-y)]=__x____．

17．5-(1-x)-1-(x-1)=__4____．

18．(3x2-5xy+y2 )+(4xy+7x2-y2)=10x2-xy．

19．(4xy2-2x2y)-( -x3-y3)=x3-2x2y+4xy2+y3．

21．已知A=x3-2x2+x-4，B=2x3-5x+3，计算A+B=_3x3-2x2-4x-1_____．

22．已知A=x3-2x2+x-4，B=2x3-5x+3，计算A-B=__-x3-2x2+6x-7____．

23．若a=-0.2，b=0.5，代数式-(|a2b|-|ab2|)的值为_0.03_____．

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_m4-4m3-2m2-2m+4_____．

26．-(2x2-y2)-[2y2-(x2+2xy)]=_-x2-3y2-2xy_____．

27．若-3a3b2与5ax-1by+2是同类项，则x=__4____，y=__0____．

28．(-y+6+3y4-y3)-(2y2-3y3+y4-7)＝__2y4+3y3-2y2-y-1____．

29．化简代数式4x2-[7x2-5x-3(1-2x+x2)]的结果是_-x+3_____．

30．2a-b2+c-d3=2a+(c-b2 )-d3=2a-d3-(b2-c )=c-(b2+d3-2a )．

追问

不好意思，是答案

追答

给的有答案，在原题上

Answer 2

ab
4.2x 4y．
5．-a3bc2-15ab2c
6.x2 2x
7．-3y 7．
11．x2-xy y2
12．2a-2b-3
13．0
14．x-y
16．x
17．4
18．10x2-xy．
19．x3-2x2y 4xy2 y3．
21．3x3-2x2-4x-1
22．x3-2x2 6x-7
23.0.03
25．m4-4m3-2m2-2m 4
26．-x2-3y2-2xy
27．x=4，y=0
28．2y4 3y3-2y2-y-1
29．-x 3
30．c-(b2 d3-2a )
好不容易，给个采纳