比较大小：第一题：x and y are numbers on the number line.A.x>y B.xy B

数学问题：x and y are numbers on the number line求解释,谢谢~~~! GRE数学题1x and y are number on the number line.比较x与y大小求翻译与解法 On the number line,the distance between x and y is greater t tangent line For what values of a and b is the line 4x+y=b t If the line Y = x + 3 B and the two axes of the area of a tr If x,y,and k are positive numbers such that [X/(X+Y)]*10+[Y/ 设a=x^2+3xy,b=-2x^+xy-y^2,当x小于y小于0时求a-b的值并比较大小 分式加减.第一题（x-y）平方分之2xy平方+1-（y-x）平方分之1+2x平方y 第二题a+b 若x=a^2+2b,y=a^2+2b-2,试比较x,y的大小. x=a方+b方+20 y=4(2b-a) 比较x,y的大小 第一题：8x^3y-4x^2y-2xy 第二题：6ab^3-2a^2b^2+4a^2B 已知：A=X*X-3xy+y*y,B=2x*x+xy-3y*3y.求A+B,A-B,A+2B