已知a-b=5ab，则2a+3ab-2ba-b-2ab的值是______．-数学

更多内容推荐

• 计算：x2+y2x+y-x-y．-数学
• His first book ______ next month is based on a true story of his family. A．publishedB．to be publish
• The policeman kept his eyes________on the screen of the computer to identify the criminal's fo
• (3xx-2-xx+2)×x2-4x．-数学
• （1）化简：45+1220-515（2）先化简，再求值：aa+3-3a-9a2-9，其中a=1．-数学
• (xy-x2)÷x2-2xy+y2xy•x-yx2-数学
• 先化简，再求值：2xx-3+x3-x，其中x=-1．-数学
• 先化简，再求值：(1+x-3x+3)÷2xx2-9，其中x=4．-数学
• _______ never to come back, the boy left his home angrily.A．DeterminedB．DeterminingC．Being determin
• 先化简：(1+3a-2)÷a+1a2-4，然后请你给a选取一个合适的值，再求此时原式的值．-数学
• 化简分式：（2a-1-1a+1）÷1a2-1，并从-2，-1，0，1，2中选一个能使分式有意义的数代入求值．-数学
• 将下面的代数式化简，再选择你喜欢且有意义的数代入求值．（1a-b+1a+b）÷aba2-b2+a-1．-数学
• 计算(1-11-a)(1a2-1)的结果为（）A．-a+1aB．a-1aC．a1-aD．a+11-a-数学
• 先化简，再求值：①2x+1-1x2-1÷xx2-2x+1，其中x=5；②(x-1x-x-2x+1)÷2x2-xx2+2x+1，其中x满足x2-x-1=0．-数学
• ______ from heart disease for years, Andy has to take some medicine with her wherever she goes. A．T
• The tower_____ in the 1800s is the oldest building in this area.A．to be completedB．being completedC
• If the building project_______ by the end of this month is delayed, the construction company will be
• 先化简再求值：3ab-a3b+a2b2a2+2ab+b2÷a2-aba2-b2，其中：a=5+1，b=5-1．-数学
• 先化简再求值：1x-1-1x2-x，其中x=2．-数学
• 先化简再求值：4aa2-4-2a-2，其中a=2-2-数学
• 先化简，再求值：2xx2-4x-1x-2，其中x=-3．-数学
• _____ his electronic dictionary made himself sad.A．LosingB．LostC．Being lostD．To be lost-高二英语
• They are broading the bridge to _____the flow of traffic.A．put offB．speed upC．turn onD．work out-高三英语
• ---Did you enjoy yourself at the party? ---Yes.I appreciated_________.A．to be invitedB．to have invit
• 先化简，再求值：(1a-b+1b+a)÷aba+b，其中a=2+1，b=2．-数学
• 计算（1）(ab)-10(-a4b3)-3•a-2b（2）a-ba-c÷(b-ab-c÷c-ac-b（3）当x=2时，求x2-1x2+x-2÷(1+1x2+2x)的值．-数学
• ____inherskirt,thelittlegirltriedtomakeherself_____attheparty.A．Dressed;noticeB．Dressing;noticedC．Dr
• ______ hard all day, I fell fast asleep. A．WorkingB．Having worked C．WorkedD．To work-高二英语
• Every evening after dinner, if not ______from work, I will spend some time _____ my dog.A．tired; wa
• 先化简：(x2-2x+1x2-1+1x)÷1x+1，再取一个你认为合理的x值，代入求原式的值．-数学
• 化简求值：（1）4x2-8xy+4y22x2-2y2，其中x=2，y=3；（2）（a-b+4aba-b）（a+b-4aba+b），其中a=32，b=-12．-数学
• 已知x=2010，y=2009，求代数式(x-2xy-y2x)÷x-yx的值．-数学
• Not recognizing me at first, __________.A．he closed the doorB．the door was closedC．the door was clos
• There are many tall old trees____ in and around our school.A．stoodB．to standC．standingD．being standi
• I regretted _________ a lecture made by proffessor. Wu.A．missingB．toC．missD．missed-高二英语
• She soon _________ French when she went to live in France.A．set upB．took upC．put upD．picked up-高三英语
• Mary escaped __________ for her coming late for school this morning.A．from punishmentB．punishingC．be
• 计算(a2+b2a2-b2-a-ba+b)×a-b2ab的结果是（）A．1a-bB．1a+bC．a-bD．a+b-数学
• In the 28th summer Olympic Games , America won the most gold medals ,­­first .A．rank B．ranki
• You should pay more in Beijing if you want to rent an apartment ___________ south.A．facingB．faceC．fa
• 化简：x3•(1x3-1x2+1x)-数学
• 1-x-yx+2y÷x2-y2x2+4xy+4y2．-数学
• Since you have had your cell phone _____ , you don’t need to borrow mine. A．repairing B．to repair C
• 先化简，再求值：(1+1m-2)÷m2-12m-4，其中m=-5．-数学
• ______ me the truth, or I’m not going to leave the room.A．TellB．TellingC．To tellD．If you tell-高一英语
• 计算：（1）a-bab+b-cbc+c-aac；（2）ba-b+b3a3-2a2b+ab2÷ab+b2b2-a2．-数学
• 先化简，再求值：1a+1-a+1a2-2a+1÷a+1a-1，其中a=2．-数学
• 已知a=3，b=-2，求(1a+1b)•aba2+2ab+b2的值．-数学
• ______ the same story many times, my little brother can now tell it himself.A．TellingB．Having toldC．
• — Can I help you?— Yes, I’m looking for a pen.— We have some new arrivals for you to ______A．selectB