已知关于x的一元二次方程mx2-（2m-1）x+m-2=0（m＞0）（1）求证：这个方程有两个不相等的实数根；（2）如果这个方程的两个实数根分别为x1，x2，且（x1-3）（x2-3）=5m，求m的值

更多内容推荐

• 单词拼写： 根据下列句子及所给的首字母写出空缺处各单词的正确形式。1. People began to concentrate less on religious themes and a___ a
• When we were young, we were often ______by Grandma to pay attention to our table manners.[ ]A. permi
• Pip agreed to give some piano lessons to the girl_______ for a generous gift from her mother.A．in na
• 解方程：x+1-3x+1=2．-数学
• Jane worked hard before the final exam, and it ________. She got an A.[ ]A．paid offB．showed offC．too
• —— I think a design which ________ all the ages and social groups is not easy to make.—— I can’t agr
• John looked at the old photo to _______ his memory of the happy days when he was at school.[ ]A. rem
• Before my father moved off, he told me again and again that I should ______ the rules and regulation
• 用换元法解方程：x+1x-xx+1=32-数学
• 解方程：1x+1+1x-1=0．-数学
• — Would you like to go camping with me when the summer holiday comes?— I really dislike camping, but
• Danny Way's jumping over the Great Wall and ______ his own dream should be an inspiration to th
• The shower that we put in a few years back has broken and we cannot afford to________it.[ ]A. reduce
• After _____from his illness, Mr.Smith was advised to take up gardening as a hobby.[ ]A. benefitingB.
• A harmonious society is very important, so all the laws must be strictly _____. [ ]A. watched B. obs
• 若分式的值为0，则x的值为．-八年级数学
• — What are we going to do after work? — I'm thinking that we could _____a movie. [ ]A. take dow
• －What do you think we can do for our aged parents? －You_______ do anything except to be with them an
• —Have you finished your book report?—Not yet. I couldn't________on it with so loud music next d
• The agreement indicates that the two companies will _____ with each other again.[ ]A. team up B. tur
• Rather than________to the park，I would prefer to spend the weekend at home.[ ]A．to goB．goC．wentD．to
• 解方程：1x-1+x2-3xx2-1=-2．-数学
• There are many things that I can't_____ going abroad,of which is the ignorance of the locals.[
• Some high officers were punished by law only because they were _______ what didn’t belong to them.A．
• 解方程：3x-2=2-xx-2-数学
• 计算：．-八年级数学
• 计算：．-八年级数学
• Cynthia is not ashamed of what she does, even if she _____ doing something wrong. [ ] A. keeps up B.
• (-xy3)2的计算结果是：()A．xy5B．x2y6C．-x2y6D．x2y5-八年级数学
• 短文改错。Dear Alice,I have just got some good news to tell to you. I win a national prize for painting l
• Having noticed that she was followed by someone, she stopped and looked at the shop window, _____to
• 如果用换元法解方程x2-1x-3xx2-1+2=0，设y=x2-1x，那么原方程可化为（）A．y2-3y+2=0B．y2+3y-2=0C．y2-2y+3=0D．y2+2y-3=0-数学
• Attention, please! ________ for your luggage on the train or the bus![ ]A. Break outB. Turn outC. Wa
• The stories of Guo Mingyi are really moving. __________ he is the most moving and respectable man I
• 用换元法解方程(xx+2)2-5(xx+2)+6=0-数学
• Scientific researches show that to _________ a language one had better often get exposed to it.A．ack
• I'd like to have these documents _______ in a minute. [ ]A. sorting outB. sorted out C. to be s
• 已知，则的值为（）A．B．C．2D．-八年级数学
• 下列方程不是整式方程的是（）A．22x2-12x=1B．0.2x2-0.4x3=0C．x2+15=3D．1x2+x=2-数学
• We can_____skills from social practice activities.[ ]A. lost B. gained C. kept D. took-高一英语
• It is surfing on the Internet late into the night that my getting up late.[ ]A. sticks to B. leads t
• 解方程：x2-2x-2=3x2-2x-数学
• 关于x的方程x2-（5k+1）x+k2-2=0，是否存在负数k，使方程的两个实数根的倒数和等于4？若存在，求出满足条件的k的值；若不存在，说明理由．-数学
• 解方程：x2=6x2-x+x-1-数学
• I make no apologies for the way I have _____myself over the years and I have no regrets. [ ]A. behav
• The volcano________in 1946 after one hundred and twenty years of silence.[ ]A. explodedB. burstC. er
• 若解分式方程2xx+1-x+1x=a-1x2+x产生增根，则a的值为（）A．-1或2B．1或2C．0或3D．0或-3-数学
• We should give students more chances to _______ the problems in their daily lives.A．deal withB．end u
• — How about her songs?— Very well, and she can also dance. She is _______ a singer.A．more thanB．bett
• The train had not come yet and the man ______ his watch anxiously.A．focused onB．glanced atC．watchedD