八年级上册语文学练优

解方程（x²-5）²-x²+3=0,令x²-5=y,则原方程变为（ ） 英语什么文章比较好看? 一束光线从A(0,2)射出,经过x轴反射到B(4,3),求A到B的距离 光线从A(-3,5)射到X轴上,经过反射以后经过点B(2,10),求光线从A到B的距离 从A点（0,1）射出一束光线经过x轴反射后到达B点(3,3）,求A点到B点所经过的距离,以及反射点的坐标急 英语翻译the puppy often misses the paper during the paper-training stage of lifethus making the house smell like the public restroom at a city bus station首句咋翻译?咋那么不通呢you don't cure an illness by ignoring it or just fighting 英语翻译Out in the cold,one of the crewmen was standing watch.Suddenly,up ahead ,he saw something in the water. 英语翻译yet,he continued writing almost to the end of his life,had yeats stopped writing almost to at age 40,he would probably now be valued as a minor poet,for there is no other example in literary history of a poet who produces his greatest wor 它们至今仍被广泛阅读 翻译句子 求函数f(x)=|x-2|(x-3)(x-4)的极值及相应的x的值 求函数f(x)=∫【0到x】t（t-1）dt的极值点xo 谁说甲、乙双胞兄弟,甲乘光速飞船旅行一圈回来就会比乙年轻?假设：甲携带地球产电子表乘光速飞船旅行电子表显示时间1年后回到地球,那么甲凭什么比地球上也同样生活了一年的乙年轻? 告诉我下八年级下册语文习题26.1第2题怎么做哟?　我都迷茫了,十分感谢大家许0 我想知道到, 英语翻译原句是：寻找属于我的罗切斯特英文翻译是：look for the Rochester that belongs to me Belong加s没错吧?还有 Rochester 这个人名前我加特指“the”可以吧?但是我想写“属于我的”呀~ 英语翻译people are pouring polluted water into the river,which will do great harm to human beings.看看句式啊有错误 英语翻译Valuation allowances are established,whenever necessary,against net deferred tax assets when it is more likely than not that some portion or all of the deferred tax asset will not be realized.不管是否必须,针对净利递延税收资 若定义在R上的偶函数f(x)在(负无穷,0]上单调递减,且f(-1)=0,则不等式f(x）＞0的解集是A（负无穷,-1）∪（1,正无穷）B（负无穷,-1）∪（0,1）C（负无穷,0）∪（0,1）D（-1,0）∪（1,正无穷） 证明：有两边和一边上的高对应相等的两个锐角三角形全等写出已知,求证, 若定义在R上的偶函数f(x)在职(-∞,0]上单调递减,且f(-1)＝0,则不等式f(x)＞0的解集是A.(-∞,-1)∪(1,+∞) B.(-∞,-1)∪(0,1) C.(-1,0)∪(0,1) D.(-1,0)∪(1,+∞) 定义在[-2,2]上的偶函数f(x),它在[0,2]上单调递减,则不等式f(x)+f(-x)>x的解集 光线从点A（-3,4）射到x轴上的点B后 人教版小学语文期末总复习一年级下册宁波出版社2008.4第一版P57第八.发现与语言实践中第一小题是仔细看下面三组字,说说你的发现.第一组是犬字旁,第二组是目字旁,我都会,但第三组“蚁,像 电容器两端电压为交流最大值为什么 我想知道到, 英语翻译Hate myself for loving you so much Oh ..I hate myself for falling back in love Never been good at words I want to say I sing my love for you I'll just let the music makes me love to you 最好通俗易懂点 英语翻译1.Because of the heavy snow,the passengers had to wait at the airport until midnight when the snow stopped.3.Similar-sounding English words often result in misunderstandings among English-speaking people.5.Mr.Lee felt very embarrassed whe 锐角三角形中一点到三个顶点的距离相等,那么这个三角形是等边三角形吗? 锐角三角形内哪一点到各顶点距离和最少?我们班主任出的一道题做对了不用做1星期作业她的提示说：这个点是一个数学家发现的 他的名字三个字 这个定理是二个字（他名字中的）锐角三角 若动圆与圆x²+y²+2x=0相切,同时与圆x²+y²-2x-8=0内切,求动圆的轨迹E的方程 己知圆c1半径为七,与,y轴相切,与原c2,（x-3）²+y²=1内切,则圆c1的方程为 若偶函数f(x)在(负无穷,0)上单调递减 则不等式f(-1)