已知m是整数，且满足2m-1＞05-2m＞-1，则关于x的方程m2x2-4x-2=（m+2）x2+3x+4的解为______．-数学

更多内容推荐

• 三角形的三边分别为3，1-2a，8，则a的取值范围是（）A．-6＜a＜-3B．-5＜a＜-2C．2＜a＜5D．a＜-5或a＞-2-数学
• 解不等式（组），并把解集用数轴表示出来（1）x-3x-52＜2(8-x)5-1（2）x3-x-12≤1（3）4x-8＜x+1x+4＜3x+8（4）x-3(x-2)≥41+2x3＞x-1．-数学
• 求不等式组1-x2＜03(2x+1)≤5x+7的整数解．-数学
• 不等式组4≥2(1-x)-x≥2x-3的解集是______．-数学
• 已知点P（2a-6，3a-15）在第四象限，则a的取值范围是______．-数学
• 解不等式组：5x+2＞4x15-9x＜10-4x．-数学
• 满足x+y=43x-2y≤8的所有正整数解有（）A．2组B．3组C．4组D．无数组-数学
• 解方程或不等式组；（1）2x-1＞1x-2≤x-12；（2）1x=x3x-2．-数学
• 阅读理解。 How important is your appearance? Although everyone wants to be good-looking, are beautiful pe
• Matt's hobby was collecting stamps. He had stamps from many countries, like America, Egypt and
• If you like shopping and you are crazy about fashion, London is a good place for you. In London you
• 阅读短文，选择正确答案。 Oftentimes one hears children wishing they were grown-ups, and old people wishing they
• 阅读下面短文，根据所给语境，按要求完成下列各题。 Happiness is for everyone. In fact, ①happiness is always around you if you
• One day three Frenchmen who did not know English very well were talking about the English language.T
• 根据短文内容，找出相关信息，完成表格。 It seems that everybody tells lies-well, not big lies, but "white lies&quo
• Who do you admire(崇拜)?Different people may have different ideas. If you’re a sports fan, perhaps the
• There are many different ways to travel to Paris from London. One of the quickest and most popular w
• 用所给词的适当形式填空，其中有两项多余cause, health, clean, reason, make, easy, be Frequent (频繁的) hand cleaning is the
• Tony is six years old. He is a good boy. But he can’t get up early. He sleeps until nine or ten o’cl
• Have you e 1 planted a few trees on Tree Planting Day?Each year, many of people, both old a 2 __ you
• 阅读下列短文，选择正确的答案。Hello, dear friends! I’m Jenny. Please look at this photo. The girl in red is me. I’m
• 缺词填空。 Reading is an activity people enjoy a lot in their free time.Some like reading newspapers and
• 阅读理解，判断正（T）误（F）。 Reading papers Many people sleep late on Sunday morning, but others don't. Ho
• 阅读理解. Mr Brown, who teaches history in a middle school, often falls asleep (睡着) in class. But he doe
• 阅读理解。Which animal do you think is "the king of the animals", the elephant, the lion or the
• 阅读短文，回答问题。I remember as a small child at gatherings (聚会) with family or friends, someone would ask:
• In Britain you’re allowed to drive a car when you’re seventeen. You have to get a special two-year d
• This is not a diet. It’s a simple way to lose weight. And you don’t even have to give up the food yo
• Want to save the environment? You probably can’t fix everything on your own, but by taking small ste
• 你肯定听说过”早睡早起身体好” 这句著名的俗语吧。为什么这么说呢？请看下文找找依据吧，然后让自己养成良好的生活习惯。There is an old saying. It tells us we mus
• Where are my students? They are not on the playground. They are not in the library, Where are they?
• 阅读理解。 I am a five-year-old elephant. When I was a baby, I lived in the wild with my parents. But som
• My uncle is a bus driver. He goes to work at 6:30 in the morning. Every day he is very busy and gets
• 阅读理解。 Parents always ask, "How can I get my child to eat fruits and vegetables?" One answe
• “Tom? Are you in bed yet?” called Mrs. White. There was no answer. Mrs. White put down her book and
• When I was young,I liked to play jokes on people I knew,especially on my parents and friedns.One da
• More and more people like bicycling and it is no surprise. It is fun, healthy and good for the envir
• Food is very important. Everyone needs to 1well if he or she wants to have a strong body. Our minds
• 阅读理解。Most American families are smaller than the families in other countries. Most Americanfamilies
• 阅读理解。 Encouraging words are very important. Here is a story about it.A group of frogs were traveling
• 先通读下面的短文，读懂大意，然后从后面各题所给的A、B、C、三个选项中选择可以填入相应空白处的最佳选项。An old man has a cat. The cat now is very old. S
• We spend hours, days and years of our lives in school. Imagine you could design your dream school, w
• Alice is a busy girl. Now she is relaxing .She is watching the Friday night weather report on televi
• 阅读理解，根据短文内容，判断下列句子的正(T)误(F) Zhou Yan, a Junior 3 student in Sichuan Province, wishes she never got a
• We have a big playground in our school .We all like to __1__ games __2___ after school .It’s Friday
• 阅读短文，从A、B、C、D四个选项中，选出可以填入空白处的正确答案。This is a1of my bedroom. It’s a nice 2. The door（门） is 3. And a ba
• 仔细阅读，选择正确答案。Dear Sir, I have to travel every day from Souk Road to the airport. Two buses travel alo
• The world of out-of-doors is full of secrets. And they are so interesting that quite a lot of people
• 阅读理解。 There are many wetlands in China and some of them have become internationally important wetlan
• 阅读理解。 Some people like to get up early, but some do not. In fact, it is really good for us to get up