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在等式y =ax的平方+ bx+c中x=1时y=4当x=2时y=-3当x=-1时y=0求abc的值 在等式y=ax的平方+bx+c中,当x=-1时,y=0;当x=2时,y=3;当x,1时,y=0,求abc的值 sinA cosA是方程4x2-4mx+2m-1=0的两个根 A大于3/2派小于2派,求A 答案是5/3派 已知sina,cosa是方程4x方-4mx+2m-1=0的2根,二分之3πi小于a小于2π, 关于x的方程式ax²+bx+c=2与方程(x-1)(x-3)=0的解相同,则a+b+c= 2x2+4=2(x2+2)是因式分解吗 因式分解-16a^2-24ab-9b^2 （3）9A2-24AB+4B2 (4)-A2+8A-16那个可以用完全平方公式因式分解 因式分解:a^3 - 5a^2 b - 24ab^2 零点六四平方千米等于多少平方米 已知F1、F2分别是椭圆C：x^2/a^2+y^2/b^2=1(a>b>0)的左、右两个焦点,右焦点F2(c,0)到上顶点的距离为2,a^2 在y=ax的平方+bx+c中,若a+b+c=0,且当x=2时,y=3;当x=3时,y=28.求a,b,c的值,并求出当x=-2时,y的值是多少 谁能给我有关节日习俗的作文 There is going to be a music festival in our school next week.All the students are______ itA.looking for B.thanking for C.preparing for D.asking for the students in three____(年级)in our school will go on a trip next week The park is next to our school.同义句The park is___our school Two _______the students in our school will go to Beijing next week. A. hundreds of B. hundred of C.Two _______the students in our school will go to Beijing next week. A. hundreds of B. hundred of C. hundred D. hundreds该选哪一 已知tana,tana分之一是关于x的方程x平方-kx+k平方-3=0的两个实根,且0 已知0 英语翻译它们之间有什么区别?它们具体是怎么用的？ We.didn't.talk.about.our.life.We.mainly.talked.about.our.work的翻译 Talk about the interviewer 翻译成汉语 lets talk about a man翻译成中文是什么意思 已知一元二次方程ax+bx+c=0的一个根位1,且a,b满足等式b=[√(a-2)+√(2-a)]-3,求方程1/4y-c=0 零点六四平方千米等于多少平方米 下列因式分解错误的是(　　) A．x2－y2＝(x＋y)(x－y) B．x2＋6x＋9＝(x＋3)2 C．x2＋xy＝x(x＋y)如题 I want _____ (be)in our school sports club用所给单词的适当形式填空 i want to be in a club in our school同义句英语i think ______________________翻译：but I do not think i can be a successful sports man because I an not ai it 和 who is nancy ,can you guess? I want____ _____our school club.填两个单词,除了 to be do you want to sing then you can _____in our school music club A.be B.are C.to be D.is 尽快回复 I want to join our school Sports Cenrte的翻译 130.144的平方根=要正的