化简（1+1a-1）÷aa2-2a+1的结果是（）A．a+1B．1a-1C．a-1aD．a-1-数学

更多内容推荐

• 先化简，再求值：(x2-6xx+2+2)÷x2-4x2+4x+4，其中x=2+3．-数学
• I feel greatly honored _________ into their society．A．to welcomeB．welcomingC．to be welcomedD．welcom
• My doctor advised me to reduce the amount of sugar ______ to the milk I drink.A．addB．to addC．adding
• 先化简再求值：（x2x-2+42-x）•1x2+2x，其中x=2．-数学
• The missing boys were last seen _______ near the river.A．to playB．to be playingC．playD．Playing-高二英语
• This is the only way that I can think of _______ the problem of water waste in urban areas.A．settlin
• 先化简，再求值：(1+1x-1)÷xx2-1，其中x=12+1．-数学
• 先化简，再求值.a2-1a-2•(1-1a-1)，其中a=-1．-数学
• 化简求值：a-ba÷（a-2ab-b2a），其中a=2010，b=2009．-数学
• 先化简分式：1-a-1a÷a2-1a2+2a，然后请你给a选取一个合适的值，再求此时原式的值．-数学
• After completing and singing it, please return the form to us in the envelope _________.A．providedB．
• 先化简，再求值：(a+1a2-a-aa2-2a+1)÷1a，其中a=3+1．-数学
• 先化简，再求值：(1-1a+1)-aa2+2a+1，其中a=3-1．-数学
• Betty, still ______ excited, took away the box ______ with birthday presents for her.A．looked; fille
• When ______, the new railway will run for 250 miles. A．to completeB．completedC．being completedD．to
• America is a country ________many different nationalities as well as one with foreign immigrants ___
• 化简(x-1-8x+1)÷x+3x+1，将x=3-2代入求值．-数学
• When she came in, she found a stranger ______ at the back of the classroom with his eyes ______ upon
• 先化简再求值：（x+1-）÷，其中x=。-七年级数学
• _______ that he made an obvious mistake, Jeff went on with his speech.A．Not realizedB．Not to realize
• ack went to college last year, _______ to return home until he achieves his goal.A．determined notB．d
• 先化简，再求值：x3-xx2-2x+1•(1-1x)，其中x=2-1．-数学
• 先化简，再求值：(2xx2-4-1x-2)÷xx+2，其中x=-13．-数学
• 先化简，再求值：x2-2xx-1•(1-1x)，其中x=6．-数学
• 先化简，再求值：x2-6x+92x-6•（x+3），其中x=5．-数学
• Ifm=2，then(-m)3×(-1)4-|-12|÷[-(-1m)2]-m2×(-14)+[1-32×(-m)]=（）A．-2B．-1C．1D．2-数学
• ______ to sunlight for too much time will do harm to one’s skin. A．After exposedB．If exposingC．Havi
• Please remain _______; the winner of the prize will be announced soon.A．seatingB．seatedC．to seatD．to
• ____in red , she looks very beautiful.A．DressedB．DressingC．Having dressedD．Having been dressed-英语
• ______ for the breakdown of the school computer network, Alice was in low spirits. A．BlamingB．Blamed
• 已知x+y=4，xy=-12，求yx+xy的值．-数学
• 先化简，再求值：，其中x所取的值是在-2＜x≤3内的一个整数。-九年级数学
• 先化简，再求值：a+1a2-4a+4×a2-42a+2，其中a=-1．-数学
• _______ to sunlight for too much time will do harm to one’s skin.A．Being exposedB．ExposedC．Having ex
• _______ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.A．T
• The bell _______ the end of the period rang, _______ our heated discussion.A．indicated; interrupting
• It’s a difficult skill to master, but ______, it will benefit you for the rest of your life. A．once
• 已知a=2005，b=12005，求(a2a-b+b2b-a)÷a+bab的值为______．-数学
• 先化简，再求值(1)，其中x=(2，其中a=4.-八年级数学
• 计算：(1x+1-1x-1-2)÷21-x．-数学
• ______ by Ren Changxia's deeds, many young girls want to be a policewoman in the future.A．To be
• Vaccination(接种疫苗) against A H1/N1 flu will begin across Britain next week, _____a sharp increase in
• _____ to improving services, we will provide customers with all the information they need.A．Being co
• (2ab)2-ab÷b2a=______．-数学
• 先化简代数式：，然后选取一个使原式有意义的x的值代入求值。-九年级数学
• 化简求值：(x+2x-2+4x2-4x+4)÷xx-2，其中x=-12．-数学
• Eyes ________, I see the moon so bright; Head ________, in homesickness I am drowned.A．raised; bendi
• If you’re in Florence, Italy and see a man on a ladder ________ the dust off statues and buildings,
• —Would you like to go to the shopping mall with me tonight? —I’d like to, but I have to attend a lec
• ________ at the golden belt of Yangtze River Delta, Ma'anshan is the National Garden city _____