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2,4的知识点总结,那里可以.快开学了. 3X^-7X+4=0^代表平方3X^-7X+4=03X^-7X+4=03X^-7X+4=03X^-7X+4=03X^-7X+4=03X^-7X+4=0 1.7X+8.3X=0. 已知不等式x²+3(a+1)x+2＞0在【1/2,3/2】内恒成立求实数a的取值范围 [英语]希望大家帮我找找作文中的语法错误.初中生作文,I never believe there is any treasure that people can find it.If somebody find it so many years later,they must has been corrupted.So I never hope I can find it.but in fact ,we 找找这篇英语作文的语法错误或任何有错误的地方,咱可以改正一下哈,I watch Alice in Winderland in summer holiday.Alice is a 19-year-old girl.She joined a party with her mother.During yhe party,she saw a white rabbit and follo 一个英语短文填空,希望各位帮忙Dear sir , Thirty years ago ,I walkde into you bakey and asked for some loaves of bread to sell,At that time ,I was 12 years old,A young lady s-------me that day,she gave me five loaves and wished me good 若a/b=3求分式a^2+ab-b^2/a^2-2ab+2b^2的值 已知x属于R,不等式x^2-4mx+2m+30≥0恒成立,求实数m允许取值的范围 自己写了一个先短文,请帮忙修改语法错误.我是英语初学者The .For Trump.That is first reading a English book for me.Although my English not good,but i feel very expective.For now,someone must be want to know how can I understand a 解方程：（0.1-0.3X）/0.3-2=（0.7-X）/0.5 小数化成整数得 已知 a分之1减去b分之1=2 求分式2a+ab-2b分之a-2ab-b的值 把方程x十1/0.3一0.2x一1/0.7=1中的小数化为整数 已知 a分之1减去b分之1=3 求分式2a+ab-2b分之a-2ab-b的值. 已知y=（m+1/2)x+3-m是一次函数,则m的取值范围是（ ）如此函数是正比例函数,则m的值是（）,其解析式是 已知y是x的正比例函数,并且当x=3时,y=-6 ；求它的解析式；.如果点A（m,m+3）是它的图像上的一点,求m的值 已知圆过点(1,2),圆心在x轴上,并且与直线3x+4y-2=0相切,求圆的方程.我做出来delta 自己写了个英语短句,麻烦高手帮忙指出语法错误.或者有什么更好的表达方式,谢过了~selfless mother loveI can’t find a person like my mother,she always gives me the expensive gifts,but she buys a cheap clothes for hersel 英语达人麻烦看一下这篇小作文有没有语法错误Living in cities People lives in cities has been brought into focus.Nowwadys,more and more people moving in cities,acording to a recent survey conducted by CCTV,the past decade has witnes 一篇英语小作文,麻烦看看有什么语法错误 What a terrible scene!The picture depicts a lot of rubbish piles,which make the fool man feel sorry.Obviously,the rubbish piles were made by people,who visited the spots in holiday and threw 圆心在曲线y=3/x(x>0)上,且与直线3x+4y+3=0相切的面积最小的圆的方程为急啊 在线等 求圆心在点C（3,－2）,并且与直线3x-4y-7=0相切的圆的方程 以点(2-1)为圆心,且与直线3x-4y+5=0相切的圆的方程为? 函数y=（m+1）x^(2-m^2)+n^2-4是正比例函数,跪求m,n的值,函数解析式 x4+x²-2ax+1-a² 用配末项的方法解答 若y＝(m－2)x的3－m的绝对值次方＋2n－5是正比例函数,求m、n的值及函数的解析式.式子不懂的看下面的图 已知函数y=(3m-4)x的n-2次方+(m+2n)是正比例函数,则m= ,n= ,此函数的解析式是 求不等式x²-2ax-3a²＜0（a∈R）的解集.到底是求X的解集还是求a的解集呀?为什么 对于任意x∈R,不等式2x²-a√(x²+1)+3>0恒成立,求实数a的取值范围 英语翻译摘　要：经济全球化对我国经济的发展是一把双刃剑.一方面,经济全球化给我国经济带来机遇.它加速了我国对外开放的步伐；有助于我国改革攻坚阶段棘手问题的解决；促进了我国 求英语高手帮忙翻译下 在线等 不要GOOGLE翻译哦（中文翻译到英语）Parys is a demigod and he is one of the most heroes in the Sparta, while his mother is a mortal, his father is a Titan, and his wife is a princess of the Sparta. 英语翻译总的来说,英国戏剧在莎士比亚之后就一直在走下坡路.时至今日,戏剧还在,可是名剧作家几乎没有了.而且,戏剧在文学和人们生活中的地位越来越微不足道.当然,戏剧的衰落也不只是