当x=3时，代数式(1+1x-2)÷x2-12x-4=______．-数学

更多内容推荐

• ________ with conducting an interview by QQ online, a face­to­face interview in person can
• (x+22x2-3x-x2+2x2x2+x-6)÷(12-14x-6)．-数学
• The driver wanted to park his car near the roadside but was asked by the police______.(2013·新课标全国Ⅰ，2
• 我县从今年1月1日起调整水价，每立方米水费上涨。据了解，实验中学去年11月份的水费是1800元，而今年2月份的水费是3600元。如果我校今年2月份的用水量比去年11月份的用水量多-八年级数学
• 在“5·12”汶川大地震的“抗震救灾”中，某部队接受了抢修映秀到汶川的“213”国道的任务。需要整修的路段长为4800m，为了加快抢修进度，获得抢救伤员的时间，该部队实际工作效率比-八年级数学
• 请将代数式2a-（a+1）+a2-1a-1尽可能化简，再选择一个你喜欢的数（要合适哦！）代入求值．-数学
• ________ by reporters about the case, Mr. Sun said Chongqing takes a clear­cut attitude and is
• （1）先化简，再求值：2xx2-4-1x+2，其中x=2+3（2）解方程：（3x+2）（x+3）=x+14-数学
• 先化简，再求值：（a+2a2-2a+84-a2）÷a-2a，其中a满足a2-a-2=0．-数学
• 先化简，后求值：，其中x=3。-八年级数学
• 计算：(2a+2-2a-2)÷2aa3-4a．-数学
• 先化简，再求值：xx+1-x+3x-1•x2-2x+1x2+4x+3，其中x=2．-数学
• ________ her leg the last time, Brenda decided not to go on the school skiing trip this year.A．Brea
• I just couldn't understand the former mayor ________ the money raised for children in poor are
• Life is like riding a bicycle. ________ your balance, you must keep moving.A．KeepingB．To keepC．KeepD
• ________warm at night，I would fill the woodstove，then set my alarm clock for midnight so I could ref
• A、B两种机器人都被用来搬运化工原料，A型机器人比B型机器人每小时多搬运20千克，A型机器人搬运1000千克所用时间与B型机器人搬运800千克所用时间相等，那么A、B两种机器人每-八年级数学
• 当x分别取值12008，12007，…，13，12，1，2，3，…，2007，2008时，求所得各代数式1-x21+x2值的和．-数学
• 计算：(x-2x2+2x-x+1x2+4x+4)÷x+4x．-数学
• 已知代数式ax+bcx2+d，当x=-1，0，1时的值分别为1，2，2，而且d不等于0，问当x=2时该代数式的值是多少？-数学
• 计算：（1x+1+1x-1）÷1x+1．-数学
• Life is a journey ________ with hardships, joys and special moments.A．filledB．to fillC．fillingD．hav
• It was unbelievable that the fans waited outside the gym for three hours just________ a look at the
• To some people, “spiritual health” is a very abstract concept, ________ many unexplainable elements.
• ________ all the homework assigned by the school, the students have to work at it till midnight.A．C
• 海峡两岸实现“三通”后，某水果销售公司从台湾采购苹果的成本大幅下降。请你根据两位经理的对话，计算出该公司在实现“三通”前到台湾采购苹果的成本价格是（）元/公斤。-八年级数学
• You cannot accept an opinion________to you unless it is based on facts.(2013·湖南，29)A．offeringB．to of
• 先化简，再求值：（1m-1n）÷m2-2mn+n2mn，其中m=-3，n=5．-数学
• The boy, ________ with his school work every day, felt rather tired and wanted to have a whole day t
• 化简(1+1x-1)÷xx2-1得______，当x=______（选择一个你喜欢的x值）时，求得原式的值为______．-数学
• 计算：（1）2aa2-4+12-a（2）4+(2008)0-(13)-1+|-2|（3）a2a-1-a-1（4）(xx-y-2yx-y)•xyx-2y÷(1x+1y)．-数学
• A hearty laugh relieves physical tension, ________ your muscles relaxed for over half an hour.A．to l
• The lady was so absorbed in her job that she didn't hear a customer ________ at the door.A．to
• Over 200,000 hotel reservations were made in Hong Kong through Taobao last year, ________ it the mo
• According to the new law, the people found ________ “harmful” advertisements on the streets will be
• ________ an astronaut into space in 2003, China became the third country to send a woman into space
• The money collected should be made good use ________ the people in Sichuan Province who suffered a l
• We must avoid _____ a bad impression on others in public places . A．to leaveB．leavingC．to have leftD
• A modern stadium in that new town, ________ soon, will be an ideal place for people to have all kin
• The sun began to rise in the sky，________the mountain in golden light. (2013·湖南，25)A．bathedB．bathing
• 2008年5月12日，四川省汶川县发生了里氏8.0级大地震，兰州某中学师生自愿捐款，已知第一天捐款4800元，第二天捐款6000元，第二天捐款人数比第一天捐款人数多50人，且两天人-八年级数学
• 已知x=2，y=，求的值。-九年级数学
• 已知ab=-1，a-b=3，则ba+ab=______．-数学
• We've had a good start, but next, more work needs ________ to achieve the final success in Engl
• 先化简，再求值：（x+2-5x-2）÷x-3x-2，其中x=-2．-数学
• 化简分式：m2+4mn+4n2m-n÷(m+n-3n2m-n)．-数学
• What my teacher said about planning for the future set me______.A．thinkB．thoughtC．thinkingD．to think
• We tried ________ the window, but it was still hot in the room.A．to openB．openingC．openD．opened-高三英
• ________ requires us to do two things quickly. First, ________ the main topic; and second, to write
• The academic­turned­TV­celebrity is reported ________ at a Kunqu Opera performance stage