初一数学化简求值题,急需!30个以上另外,想请问一下"b^2“是“b”的平方的意思吗?? 又想了一下就...就20道就行!! 大哥大姐帮帮忙啦!!o(∩_∩)o

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/30 09:06:07
初一数学化简求值题,急需!30个以上另外,想请问一下
xXm[+HHng=3#A#V {Inh?,ʆIPH@ -%/̽& *-=s3>xp`cm֗/>޼6p;]۾ A\l><;蕯n|}:&6NkF]᭯Fo ;Y ϮCk/o...Kqߺ鿄D~:<-]?=7ܸ>]IX_A|k-S~j?tY<~Nh8?g1>p>pzn㇏pĢwGñ֋DwOhJ࿶Nyhc4ֺ(`:σziZ5t2ptQZ\ԅ5[q@)"U¢a) cekS/ Ք)4(sfŜ6 FyK .%wʗʉaʅ܋X2k/u Zˣ„6˄ )Һ }dLP[_ ˼Vsbٷ6T"F. ɋҲZ:&FH֢HeEt3l' Qs.5h -9`qfE\kwL`L=QR)«dҗiEP!׌BR%+˸F̉e6+紙ZzƬJ"s@썅lk oM+*wAGK3 l' y*i~/\t(s[J͜Xm37/n mctLT֔!w-Lq6Rμtr2g-RJ vf峢3S͒S%j3er<FRܣFH"(Yܔ|2a3>H祈qq3',7 ɨ,Gh{O(s.HBBD p.#9*jk1W? ޔ2EQ倢 j5 3'n܈Tpp^W% k90^ D֪y-rCzZaIytIJoZgb`O@a@1bB .r@Kt_6ܘ| =@ n@sISڸ9m޹8Zc[[_4yfxӃCj>[7~"" 81SY3O0RxoWj޻o| GNTV'ƠR׆*2 3[VDdH|k_)JWi0iFJxkNW[Atwіe>DIC-]Qۘff~Md|1;~Y$O'jQKVRY QYcY?J0htZz;oN{*TUPNtx\AtuIdڨ^dpKMl,uImnsySgv𰷃g (1S/ay@K9z5Iu7k\pCipn&5wD`0A]M0G.SDDCs3$#͎ºx,i34<6 HlI.xtKI   K_g]+̓- ~r,zO!;(u OfOMB|dz~uk]=ߦn\ƪyP[mlܞԓ²wkggIVl%S]]Q+mw9=%(f'Kݴ;ERQF0<ۼyK%Xٝܛ6^t3H+δ c3#x9H^J1c%=y+$:kCC L4R5> 5BeI98b2-( )KE^fxI]$&Nd`h}ڜ Jb:/;)G;(J(?:"Co2^p:(,0N"I_uDӸ_H)VZ+sVLVtHwV%; .$4k.OP -0xPYB ILƒ)F ':ًu'AWŋUM

初一数学化简求值题,急需!30个以上另外,想请问一下"b^2“是“b”的平方的意思吗?? 又想了一下就...就20道就行!! 大哥大姐帮帮忙啦!!o(∩_∩)o
初一数学化简求值题,急需!30个以上
另外,想请问一下"b^2“是“b”的平方的意思吗?? 又想了一下就...就20道就行!! 大哥大姐帮帮忙啦!!o(∩_∩)o

初一数学化简求值题,急需!30个以上另外,想请问一下"b^2“是“b”的平方的意思吗?? 又想了一下就...就20道就行!! 大哥大姐帮帮忙啦!!o(∩_∩)o









给我点财富值吧

一楼说错了 b^2就是“b”的平方 b^X 就是b的X次方

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

全部展开

①2a-(3a-2b+2)+(3a-4b-1) =( )
=2a-3a+2b-2+3a-4b-1
=(2-3+3)a+(2-4)b+(-2-1)
=2a-2b-3
②5-(1-x)-1-(x-1)=( )
=5-1+x-1-x+1
=4
③2x-(x+3y)-(-x-y)-(x-y)=( )
=2x-x+3y+x+y-x+y
=x+5y
3ab-4ab+8ab-7ab+ab=______.
5a+3b-2a+(2b+3b)=______
2a-b2+c-d3=2a+( )-d3=2a-d3-( )=c-( ).
2x-(x+3y)-(-x-y)-(x-y)=( )
=2x-x+3y+x+y-x+y
=x+5y
已知x<0,y<0,化简|x+y|-|5-x-y|=______.
.-7x2+6x+13x2-4x-5x2=______.
3b+5a-5b+10b=______
化简代数式x-[y-2x-(x+y)]等于______.
3.3ab-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-( ).
31.3a-(2a-3b)+3(a-2b)-b=______.
32.化简代数式x-[y-2x-(x+y)]等于______.
33.[5a2+( )a-7]+[( )a2-4a+( )]=a2+2a+1.
34.3x-[y-(2x+y)]=______.
35.化简|1-x+y|-|x-y|(其中x<0,y>0)等于______.
36.已知x≤y,x+y-|x-y|=______.
37.已知x<0,y<0,化简|x+y|-|5-x-y|=______.
38.4a2n-an-(3an-2a2n)=______.
39.若一个多项式加上-3x2y+2x2-3xy-4得
2x2y+3xy2-x2+2xy,
则这个多项式为______.
40.-5xm-xm-(-7xm)+(-3xm)=______.
41.当a=-1,b=-2时,
[a-(b-c)]-[-b-(-c-a)]=______.
43.当a=-1,b=1,c=-1时,
-[b-2(-5a)]-(-3b+5c)=______.
44.-2(3x+z)-(-6x)+(-5y+3z)=______.
45.-5an-an+1-(-7an+1)+(-3an)=______.
46.3a-(2a-4b-6c)+3(-2c+2b)=______.
48.9a2+[7a2-2a-(-a2+3a)]=______.
50.当2y-x=5时,5(x-2y)2-3(-x+2y)-100=_____

收起

(1)(5a-3a2+1)-(4a3-3a2);
(2)-2(ab-3a2)-[2b2-(5ab+a2)+2ab]
3.3ab-4ab+8ab-7ab+ab=______.
4.7x-(5x-5y)-y=______.
5.23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.
6.-7x2+6x+13x2-4x-5x2=...

全部展开

(1)(5a-3a2+1)-(4a3-3a2);
(2)-2(ab-3a2)-[2b2-(5ab+a2)+2ab]
3.3ab-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-( ).
望采纳

收起

不是 b^2是 b 的开方