公里等于多少千米

用所给的词写出适当形式:Maths is_than History.(much,difficult) much difficult than前面加什么is? 求使（x²;+px+8）（x²;-3x+q）的积中不含x²;和x³的项的p .q的值 在x²+px+8与x²-3x+q的积中不含x³与x项,求p,q的值快Thanks 在x^2+px+8与x^2-3x+q的积中不含x^3 和x项,求p．q的值快点啊答对给五十分,如果加上为什么再加20分!一小时内作答!谢谢. 在x^2+px+8与x^2-3x+q的积中不含x^3与x项,求p、q的值 若（x²+px+8)(x²-3x+q)的积中不含x²与x³项,求p、q的值. （2/3）的负2次方是多少?分子需不需要平方哒?是9/2还是9/4? He likes ___ very much,but he does not like __ this morning.A,running, running.B, run ,runC,running,run D running ,to run Betty likes running and she likes cycling 等于 Betty likes running and cycling 填空并翻译.Ben likes sport.He is good at （ ）.A.run B.running C.runs Jack likes running very much一般疑问句作肯否定回答 多项式6x的三次幂减8x的二次幂减去4x能被2x整除,则常数m=__6x的三次幂减去8x的二次幂减去4x能被2x整除,则常数m=__6x的三次幂减去8x的二次幂减去4x加m能被2x整除，则常数m=__ 设实数x,y满足x^2+y^2+8x+6y+25=0,求(x^2-4y^2)/(x^2+4xy+4y^2)-x/x+2y的值． 分式的加减法：实数x、y满足x^2+y^2+8x+6y+25=0,求x^2-4y^2/x^2+4xy+4y^2-x/x+2y的值. 实数x,y满足x²+y²-6x-6y+12=0,求x-2y的最大值 已知函数f(x)=lnx+x^2-ax(a属于R) (1)求f(x)的单调区间 (2)当f(x)≤2x^2时,求a范围 better,my,than,sister,maths,likes,english,（连词成句） She liked English better than Maths=She______English_______Maths I like English better than maths用which提问 如果代数式5X的平方+Ax+B与代数式-Cx的平方-4x-2006同为某几项的和,那么A,B,C的值分别为多少A：B:C; 已知函数f(x)=1/2x方-ax+（a-1）lnx（a大于1）讨论函数f（x）的单调性求证：若a大于5,则对任意的x1大于x2大于0,有f（x1)-f（x2)/x1-x2大于-1 已知实数x,y满足x²+y²-2x+4y=0,则x-2y的最小值域最大值是? I think ( ) English is ( ) ( ) ( ) than maths.我认为英语比数学有趣得多.（句子翻译） 比起数学来,我对英语更感兴趣.I am_______________________________________than maths.填空 问一道英语的选择题的原因 I think Maths is _________than English...I think Maths is _________than English A much difficule B difficult C much more difficult D more much difficult 我学数学的时间比学习英语的时间多.—— —— me more time —— —— Maths than English. 英文数学难题（English Maths）我之前考了一题这样的数学题：Two fair dice were tossed,the sum of two number obatained were even number.Find the probabilities at least a "4" is obtained.搞不清是要求“这两个数至少有一 分解因式x的n次方+2x的n+1次方+x的n+2次方 分解因式 x的四次方+2x的三次方+3x的平方+2x+1 一次函数y=kx+b(k≠0)的图象如图所示,则关于x的方程kx+b=0的解是_________,方程kx一次函数y=kx+b（k≠0）的图象如图所示,则关于x的方程kx+b=0的解是______,方程kx+b=3的解是_______.当x_______时,kx+b＞0；当x He is a good football player.(改为同义句）He ( ) football( )