当x=3-12时，求代数式(x2-x+2x2-1-1x-1)÷(1-1x-1)的值．-数学

更多内容推荐

• 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
• The boy, who admitted _____ in the exam, promised the teacher that he would work hard at his lessons
• with the medicine shipped from China，the patient got fully recovered two days later.A．Being treated
• 已知实数a，b，c满足abc=﹣1，a+b+c=4，，则a2+b2+c2=（）-九年级数学