优课网
首页
数学
语文
英语
化学
物理
政治
历史
生物
首页
> 先化简,再求值:9-6m+m22m-4÷(m+2-5m-2),其中m=3-3.-数学
先化简,再求值:9-6m+m22m-4÷(m+2-5m-2),其中m=3-3.-数学
题目简介
先化简,再求值:9-6m+m22m-4÷(m+2-5m-2),其中m=3-3.-数学
题目详情
先化简,再求值:
9-6m+
m
2
2m-4
÷(m+2-
5
m-2
)
,其中m=
3
-3
.
题型:解答题
难度:中档
来源:犍为县模拟
答案
9-6m+
m
2
2m-4
÷(m+2-
class="stub"5
m-2
)
=
(3-m)
2
2(m-2)
•
class="stub"m-2
(m-3)(m+3)
=
class="stub"m-3
2(m+3)
,(6分)
当
m=
3
-3
时,原式=
1-2
3
2
上一篇 :
先化简,再求值:(3xx-1-xx+1)×x2
下一篇 :
若x2-9=0,求分式x2-5x+6x-3的值
搜索答案
更多内容推荐
The detective,____ to be reading a newspaper, glanced at the man_____ next to a woman.A.pretending,
当x=3-12时,求代数式(x2-x+2x2-1-1x-1)÷(1-1x-1)的值.-数学
—Would you mind my _______ your speech? —Not at all. Go ahead. A.recordB.to recordC.recordingD.of re
设a﹣b=ab,则的值是()。-八年级数学
先化简,再求值:12x-1x+y(x2-y2+x+y2x),其中x=2,y=3.-数学
化简(x2-4x2-4x+4+2-xx+2)÷xx-2,其结果是()A.-8x-2B.8x-2C.-8x+2D.8x+2-数学
先化简x-33x2-6x÷(5x-2-x+2),再选一个适当的x代入求值.-数学
It rained heavily in the south, serious flooding in several provinces.\A.causedB.having causedC.cau
to work overtime that evening, I missed a wonderful film.A.Having been askedB.AskingC.Having askedD.
If you have any difficulty ____ how to skate, you can turn to Jacky.A.learnedB.to learnC.learningD.l
先化简,再求值:m2-6m+9m2-4÷(m-4m-9m-2)•1m,其中m是方程2m2+4m-1=0的解.-数学
The student, in Jinshan Middle School for 3 years, was admitted into Qinghua University.A.to studyB.
先化简,再求值:(1+1x)÷x2-1x,其中x=2.-数学
已知a≠b,且a2-13a+1=0,b2-13b+1=0,那么b1+b+a2+aa2+2a+1=______.-数学
______ money,it remains to see whether we can put the idea into practice.A.LackingB.LackedC.To lackD
已知,请先化简,再求代数式的值:。-九年级数学
化简,求值:,其中m=.-八年级数学
When I got back home, I saw a message pinned to the door“ Sorry to miss you, I will call later.”A.re
已知,x≠0,y≠0,x≠y,则=().-八年级数学
You will see the products of Liu Ling alcohol________on every avenue of Baoding city.A. advertiseB.
Mother told me ________a noise in the hall.A.don’t makeB.make not toC.not to makeD.to make not-高一英语
__________that no one enjoys__________________.A.He seems; to be looked down onB.He is seemed; being
He sent me an E-mail, _____ to get further information. A.hopedB.hopingC.to hopeD.hope-高二英语
先化简,再求值:,其中.-九年级数学
有一道题“先化简,再求值:,其中x=﹣.”小玲做题时把“x=﹣”错抄成了“x=”,她最后的计算结果是否正确_________.(填“是”或“否”)-九年级数学
先化简:,选择一个你喜欢的无理数,然后再求值.-九年级数学
先化简,再求值:-九年级数学
先化简,再求值:其中-九年级数学
Under the new policy, anyone who is found ______ in the school building will be fined $60.A.smokeB.s
All the citizens, young and old, walked and sang, beautifully _____ in new clothes of all kinds, ___
先化简,后计算:,其中.-九年级数学
Time ____ never comes again. So we’d better make full use of our time. A.losing B.lostC.being lost D
The patient was warned ________ oily food after the operation..A.to eat notB.eating notC.not to eatD
He got well-prepared for the job interview, for he couldn't risk ______ the good opportunity. A
Children above 12 are able to take part in skiing or other activities _______for them.A.designedB.de
---They are quiet, aren’t they?---yes. They are accustomed ____at meals.A.to talkingB.to not talkin
________volcanoes now for many years, I am still as enthusiastic about my job as the first day I fir
When I came in, the children pretended ________ and no one even raised their eyes.A.to readB.have re
先化简,再求值:,其中。-九年级数学
先化简,,并任选一个你喜欢的数x代入求值。-八年级数学
甲、乙两人同时从A地出发,沿同一条道路去B地,途中都使用两种不同的速度v1与v2(v1>v2),甲前一半的路程使用速度v1、后一半的路程使用速度v2;乙前一半的时间使用速度v2、后-九年级数学
_____ by the sun, they walked towards their destination through the woods.A.GuidingB.GuidedC.GuideD.
When his father came into his room, Tom pretended _______ a book.A.to read B.to have read C.readingD
计算与化简(1)(2)先化简,再求值:,其中2-八年级数学
. .To answer correctly is more important than _______ .A.a quick finishB.to finish quicklyC.finishin
Sarah pretended to be cheerful, ____________ nothing about the argument.A.saysB.saidC.to sayD.saying
已知2+=22×,3+=32×,4+=42×,…,若10+=102×(a,b为正整数),则分式=()。-八年级数学
=()。-八年级数学
When ______ different cultures, we often pay attention only to the differences without noticing the
He found himselfby a crowd of excited people and to escape.A.surrounded; tryingB.surrounding; trying
返回顶部
题目简介
先化简,再求值:9-6m+m22m-4÷(m+2-5m-2),其中m=3-3.-数学
题目详情
答案
=
=
当m=