难题挑战 难题挑战

ughyfjjbu2022-10-04 11:39:541条回答

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悠悠88 共回答了20个问题 | 采纳率95%
其实就是这5天中,1.一个持平,两对加减1随意组合.
2.三个持平,一对加减1随意组合
3.五个持平
全部加起来就是答案了
1年前

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A.a desert B.empty C.abandoned D.wasted
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a.sewing b.sowing c.seeding d.growing
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6x^4+18mx^3-6x^3y+30x^2yz-42x^2y^2+6mx^2y-6x^2mz-6x^2z+12x^2m^2+5px^3+5yx^3+15pm-5py+25pyz+25y^2z-30py^2-30y^3+5mpy+5my^2-5pmz-5myz-5pz^2-5yz^2+10pm^2+10m^2y+10yzx^2+30myzx-10xy^2z+50y^2z^2-60y^3z+10my^2z-
10myz^2-10yz^3+20m^2yz-18my^2x+6xy^3-30y^3z+36y^4-6my^3+6my^2z+6y^2z^2-12y^2m^2+10x^2zp+30zpmx-10zpyx
+50yz^2p-60y^2zp-2zpmy-10z^2pm-10z^3p-12x^2zp-36mypx+12y^2px-60y^2pz+72y^3p-12my^2p+12ypmz+12ypz^2-24m^2yp-6p^2x^2-18mxp^2+6xyp^2-30yzp^2+36p^2y^2-6myp^2+6p^2mz+6p^2z^2-12P^2m^2+24x^2z^2+72mz^2x-24yz^2+120yz^3-144y^2z^2+24myz^2-24mz^3+24z^4+48m^2z^2
有没有高手,把它因式分解?
难度超高!
分析:看题目的确很长,但仔细观察也能发现其弱点.
1.没有常数项.
2.首项x的系数很小,预计其能分解成(x+d)(2x+o)(3x+h)(x+j)的形式.
3.自开始起,一部分是6的倍数,紧接着是5的倍数,直到至-2zpmy这一项时,这个特点断掉了.
但我还是不会接%@……¥……&%(()&)×——)+()
yingguo07681年前2
matilian 共回答了19个问题 | 采纳率100%
不能分解,可能有哪里写错了,你又不说题目的出处,
不会是你自己展开了一个,然后要求逆运算?
通常来说,逆运算都更困难,
至于(x + d) (2 x + o) (3 x + h) (x + j)可以展开成
d h j o + 2 d h j x + d h o x + 3 d j o x + h j o x + 2 d h x^2 +
6 d j x^2 + 2 h j x^2 + 3 d o x^2 + h o x^2 + 3 j o x^2 + 6 d x^3 +
2 h x^3 + 6 j x^3 + 3 o x^3 + 6 x^4
英语难题-----abroad for a tour can be a worthwhile experience to
英语难题
-----abroad for a tour can be a worthwhile experience to a senior high student.
A.Taking B.Having been taken
C.Being taken D.Taken
为什么选C而不选D
huanghunyue1年前7
Jack0808 共回答了14个问题 | 采纳率92.9%
因为taken 是过去分词,不能作主语,being taken 是动名词的被动式,可以作主语,执行者不是a senior high student,而是其他人,因此用动名词的被动式.
形式主语it 难题Do you think it difficult to work out this question
形式主语it 难题
Do you think it difficult to work out this question?
在这句话中,it 后面为什么不用is
臣本布衣也1年前1
喏兮 共回答了13个问题 | 采纳率100%
这里it是形式宾语,真正宾语是to work out this question.
请教一英语难题__they advance through the program,they will learn ho
请教一英语难题
__they advance through the program,they will learn how to read short sentences with 100% accuracy.
A.As B.While C.Though D.Before
请问为什么?
yyljionyyl1年前3
yunfeng19831218 共回答了14个问题 | 采纳率100%
B while后面应该是advancing,错了
C though是尽管,意思都错了
D before其实这里也可以,但是意思上A更好一些.
意思是当他们在这个培训中一步一步向前,他们会学会以100%准确率来读短句子.
如果用before,意思是在他们进一步培训之前,他们要先学会学会以100%准确率来读短句子.
英语短文难题.
whjm20041年前2
uolll 共回答了26个问题 | 采纳率96.2%
B
A
C
on December 25th
People use colorful lights to decorate Christmas trees.
初中英语难题Which do you enjoy ( )your spare time,playing cards at
初中英语难题
Which do you enjoy ( )your spare time,playing cards at home or
taking a walk in the park
A.to spend B.spending C.having D.to have spend
周猫猫1年前1
维安琪 共回答了18个问题 | 采纳率100%
1.答案:A.
2.翻译:你喜欢哪一种(方式)来度过你的业余时间,是在家打牌呢还是在公园里散步呢?
3.
1)此题关键是分析句子的结构.
which做enjoy的宾语,逗号后面是供选择的范围:playing cards at home or taking a walk in the park.
2)所以spend your spare time不是enjoy的宾语,后面只能填入to spend your spare time,用这个不定式短语做句子的目的状语.
3)如上解释,spend your spare time不是enjoy的宾语,所以排除B(enjoy doing sth);
在此句中用have your spare time不通,而且它也不能做enjoy的宾语,排除C;
to have spent...为不定式的完成形式,表明该动作发生在enjoy之前,错误,排除D.
英文练习难题(2)In a kitchen -- Fill in the blanks with 'little' or
英文练习难题(2)
In a kitchen -- Fill in the blanks with 'little' or ' a little'
Sister:John,give me(5)__________milk.Just a spoonful.
Brother:OK.
Sister:My cake is almost finished.You will be the first one to taste the most delicious dessert in the world.Aren't you excited?
Brother:Sorry!I have(6)___________ interest in this dessert.Look!I don't think it's delicious at all.
sameddymul1年前1
8528577 共回答了18个问题 | 采纳率94.4%
a little, little
怎样才能做出数学难题(具体做法)
点伤1年前1
胡艳华 共回答了15个问题 | 采纳率86.7%
对于做出来的,再难的也不是难题,对于做不出来的,再简单的也是难题,当然前提必须做对.没有捷径,多看、多练、多做题是唯一的方法,见得题型多了,练的题型多了,做的题型多了,难题就少了,所谓难题就是你从没有见过、练过、做过的题.不只是数学题,其他题也一样.
挑战高中数学难题方法
恋风的影1年前1
天使翅膀上的羽毛 共回答了15个问题 | 采纳率93.3%
练习高考压轴题,先做然后看答案,完全弄懂,提取没见过的解题方法和思路,整理,并归纳系列类型的特殊方法通法,像构造函数方法等.
不能急于求成,这是慢工出细活
英语难题排序.[ ]A.So they bought some ice-creams and cakes.[ ]B.Th
英语难题
排序.
[ ]A.So they bought some ice-creams and cakes.
[ ]B.They were hungry and thirsty and hot.
[ ]C.Then they played in the park.
[ ]D.They carried them a table and sat on a chair.They had them for lunch.
[ ]E.Yesterday Lanlan and Mingming went to the park.
[ ]F.Then he had a headache.
[ ]G.Then Mingming fell off the chair,he bumped his head.
不可能不爱你1年前3
今夜星光灿烂gh 共回答了15个问题 | 采纳率100%
1.E
2.C
3 B
4 A
5 D
6 F
7 G
定语从句难题老师,We like places.It is warm and relaxing in the place
定语从句难题
老师,
We like places.It is warm and relaxing in the places(合并成定语从句)
应该怎么合并?
为什么不能合并成We like the places which is warm and relaxing.
Places 后面引导的定语从句,应该什么时候用WHERE,什么时候用WHICH?
万不得已1年前1
清风愿 共回答了18个问题 | 采纳率77.8%
这位同学,你好,你的问题分析如下:
(1)应该合并为:We like the places where it is warm and relaxing.
(2)(3)在时间名词和地点名词后是否用关系副词要看它在定语从句中充当什么句子成分.一般说来,若用作主语或宾语,用关系代词;若用作状语,则用关系副词.此题中缺少状语.因此用where.
谢谢
1+2-3+4+5-6+7+8+9+10+11-12+ . +97+98-99=多少?难题!急求!
1+2-3+4+5-6+7+8+9+10+11-12+ . +97+98-99=多少?难题!急求!
请看清楚,不是1+2-3+4-5这个!
对天发誓我没看错是+9~如果这么简单我就不问你们了~
规律是:从1开始的自然数按顺序先两个加一块减去三个加一块,以此类推~
hackgod1年前4
nishizhuma 共回答了19个问题 | 采纳率89.5%
如果你把-9打成+9就悲剧了,希望没打错,那么的话,规律应该是:-3,-6,-12,-24,-48,-96,最后-99
所以1+2+3+……+99=4950
-3-6-12-24-48-96-99=-288
则 答案为 4950-288*2=4373(先消掉3,6,9……再减去3,6,9……)
如果不是+9是-9的话就是另当别论了
初二数学下册经典难题........
初二数学下册经典难题........
我要一些经常考但是难度系数很大的题...... 我还要详细的解答 嗯 谢了 我要在今天晚上 如果实在不行 就先给我北大师版初二下册的二章实数的难题和详细的答案吧 再次感谢 嘻嘻
lgqlgq711年前1
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设甲乙两人一个月花了同样多钱a买米,这个月里面米价分别为x和y,那么甲买到的米为:m=2a/(x y)乙买到的米为:n=(a/x a/y)/2m-n=2a/(x y)-(a/x a/y)/2(x y)*(m-n)/a=2-(2 x/y y/x)/2=1-(x/y y/x)/2=1-(x^2 y^2)/2xy因为(x-y)^2>=0,所以,x^2 y^2>=2xy所以(x y)*(m-n)/a
英语难题求助老师!He has let me use his House to put on fund raising
英语难题求助老师!
He has let me use his House to put on fund raising events to raise money for youth at risk programs.求全句成分划分,两个to在句子里起什么作用?put
这类句型是复合句吗?
5kev81年前1
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两个To都是表目的(来做什么),Put on举办
use sth to do
不是复合句
初一数学最难题
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某校初一年级的一场篮球比赛中,如图队员甲正在投篮,已知球出手时离地面高20/9 m
,与篮圈中心的水平距离为7m,当球出手后水平距离为4m时到达最大高度4m,设篮球运行的轨迹为抛物线,篮圈距地面3m.
(1)建立如图的平面直角坐标系,问此球能否准确投中;
(2)此时,若对方队员乙在甲前面1m处跳起盖帽拦截,已知乙的最大摸高为3.1m,那么他能否获得成功?
请教一英语难题-Well,Bob,what a surprise!It's nice to you again!-Hel
请教一英语难题
-Well,Bob,what a surprise!It's nice to you again!
-Hello,Ann!How long has it been?Wasn't it a year ago at Christmas,_____ I saw you?
A.when B.the last time
为什么不能选A.请赐教!
g可爱1年前3
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这里是一个非限制性定于丛句
在这种句子里,只可以加wh-引导的丛句
而the last time 本身是一个连词,放在这里就不合适了
求救!SOS!难题!英语!A.children's day is coming .( )you a good day!B
求救!SOS!难题!英语!
A.children's day is coming .( )you a good day!
B.thank you.
a.hope b.wish c.furthest d.farthest
huojin1年前6
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Wish
Wish you a good day~英语固定说法表示美好祝愿
英文练习难题(10) P.cC.Here is story about three little mermaids. F
英文练习难题(10) P.c
C.Here is story about three little mermaids. Fill in the correct from of the verbs.
Longtime ago, there(1)__________________(be)a little mermaid called Mimi. She(2)__________________(have)two sisters. Every moring they(3)_____________(swim)for a while. Then they(4)_____________(pick)some flower. They(5)_______________(not swim)in the afternoon because they often(6)______________(feel)tired. In the evening they(7)_____________(play)some games. WHere(8)__________they__________(sleep)?
They (9)____________________(sleep)under the water.
hrkayo1年前1
yhxwang 共回答了25个问题 | 采纳率92%
1.was
2.had
3.swam
4.picked
5.didn't swim
6.felt
7.played
8.did sleep
9.slept
英语难题 we went to the zoo at six o'clock.
英语难题 we went to the zoo at six o'clock.
如题,对 at six o'clock 提问
——— ——— ——— you ——— to the zoo?
为你永恒1年前2
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What time did you go to the zoo?
世界数学难题
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世界近代三大数学难题
1、费尔马大定理
2、四色问题
3、哥德巴赫猜想
世界七大数学难题
一、P(多项式时间)问题对NP(nondeterministic polynomial time,非确定多项式时间)问题
二、霍奇(Hodge)猜想
三、庞加莱(Poincare)猜想
四、黎曼(Riemann)假设
五、杨-米尔斯(Yang-Mills)存在性和质量缺口
六、纳维叶-斯托克斯(Navier-Stokes)方程的存在性与光滑性
七、贝赫(Birch)和斯维讷通-戴尔(Swinnerton-Dyer)猜想
有待破解的数学难题
除了上述著名数学难题外,还有以下著名数学难题有待破解.
Abc猜想
考拉兹猜想
周氏猜测(梅森素数分布猜测)
阿廷猜想(新梅森猜想) 
哥德巴赫猜想
孪素数猜想
克拉梅尔猜想
哈代-李特尔伍德第二猜想
六空间理论
英语难题A.Fill in the blanks with:is,am or are(1)There_____many
英语难题
A.Fill in the blanks with:is,am or are
(1)There_____many houses in this village twenty years ago.
(2)I_____short and fat when I was young.
(3)You_____my best friend.I like you.
(4)Paul_____very hard-working now.
(5)There_____only three windows in this house.That is not enough.
(6)Mr Lee_____rich thirty years ago.
(7)It_____vert hot yesterday.
(8)Your dress_____beautiful.You should wear it.
(9)The children_____sick last week.
(10)I_____a music student.I go to a music school every day.
cw64881年前3
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are 复数
am I作主语
are you 作主语
is 单数作主语
are 复数
is 单数作主语
is 单数作主语
is 单数作主语
are 复数
am I作主语
初中科学难题解析
binghe10291年前2
nbazen 共回答了24个问题 | 采纳率91.7%
浮力中考不考了
英语难题,A fast-speed jet got( )the air instantly A on B in Cint
英语难题,
A fast-speed jet got( )the air instantly
A on B in Cinto Dthrough
as long
liushengno001年前2
bihaijinfeng 共回答了20个问题 | 采纳率80%
as long as
只要.的意思
选C
高数难题!积分
leiguozhi1年前4
skyone_hbyc 共回答了18个问题 | 采纳率83.3%
令x^(1/6)=u,则x=u⁶,dx=6u⁵du,√x=u³,x^(1/3)=u²
原式=∫ [u³/(u³-u²)]6u⁵du
=6∫ u⁶/(u-1) du
=6∫ (u⁶-1+1)/(u-1) du
=6∫ (u⁶-1)/(u-1) du + 6∫ 1/(u-1) du
=6∫ (u⁵+u⁴+u³+u²+u+1) du + 6∫ 1/(u-1) du
=u⁶+(6/5)u⁵+(3/2)u⁴+2u³+3u²+6u+6ln|u-1|+C
=x + (6/5)x^(5/6) + (3/2)x^(2/3) + 2√x + 3x^(1/3) + 6x^(1/6) + 6ln|x^(1/6)-1| + C

【数学之美】团队为您解答,若有不懂请追问,如果解决问题请点下面的“选为满意答案”.
英语选择难题Have you seen the sign NO SMOKING?Sorry,I_______.A.I d
英语选择难题
Have you seen the sign NO SMOKING?
Sorry,I_______.
A.I didn't see it
B.I don't see it
waa414981年前4
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选A
因为那个人是因为之前吸了烟,所以才会有人对他讲不能吸烟,而那个人听了劝告自然现在也不会去吸,不能用一般现在时,理所应当用过去式.
我们老师素这样讲哒……希望对你有帮助……
小小难题
小小难题

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if,when,which难题Do you know ___________?A.if it will be fine
if,when,which难题
Do you know ___________?
A.if it will be fine tomorrow.B.where did they see her.
C.when shall we have a picnic.D.which would you like.
并请说明原因
32230931年前1
panda_s 共回答了17个问题 | 采纳率94.1%
选A
B应该改成where they saw her
C应该改成when we shall have a picnic
D应该改成which you would like
发现规律了吗?那就是后面跟的从句的词序都应该与肯定句相同.
有什么不懂的你可以发消息给我~
英语难题 句型转换 1.It's sunny today.It's a------ ------- today.
英语难题 句型转换 1.It's sunny today.It's a------ ------- today.
2.There is much wind on the mountain.
------ ------- on the mountain.
3.Look at the clouds.How black!
--------- ----------
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初二英语难题,高手进来指导1.I'm (going shopping)with my mom this Thursday
初二英语难题,高手进来指导
1.I'm (going shopping)with my mom this Thursday morning?(对括号内的部分提问)
____ ____ you ____ to ___ ____ ____ mom this Thursday morning?
2.How about going to the movies?(改为同义句)
_____ _____ ______ to the movies?
3.I'm very busy tonight.I can't come to your party.(合并成一个简单句)
I'm _____ busy ______come to your party.
4.我将做我想做的事.(be going to)(英译汉)
_________________________________________.
5.Open the door,please.(改为否定句)
_______ ________ the door,please.
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1 What are , going ,do with your
2 Why not go
3 too, to
4 I am going to do what I want to do.
5 Don't open
世界现代三大数学难题
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美国麻州的克雷(Clay)数学研究所于2000年5月24日在巴黎法兰西学院宣布了一件被媒体炒得火热的大事:对七个“千僖年数学难题”的每一个悬赏一百万美元。以下是这七个难题的简单介绍。
“千僖难题”之一:P(多项式算法)问题对NP(非多项式算法)问题 在一个周六的晚上,你参加了一个盛大的晚会。由于感到局促不安,你想知道这一大厅中是否有你已经认识的人。你的主人向你提议说,你一定认识那位正在甜点...
初中英语试卷难题1
初中英语试卷难题1

三灌帮不要填写1年前1
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1.activities
2.programmes
3.saying/sentence
4.prize
5.famous
6.team
7.plant
8.mix
9.event
10.experience