x^2/(2-m)+y^2/(|m|-3)=1表示双曲线,m的取值范围

4m(x-y)-2m^2(y-x)^3 (x-y)m次方(y-x)2m次方+(y-x)3m次方得几 计算(x-y)^m(y-x)^2m+(y-x)^3m 计算:(1).(2x-3y)/(y-x)-(x+2y)/(x-y) (2).[5m/(m-3)+2m/(m+3)]*(m^2-9)/m 计算：(y-x)^3(x-y)^m-(x-y)^m+2(y-x) (Y-X)^3*(X-Y)^m+(X-Y) ^m+1*(Y-X)^2 已知x^(3m)=2 y^(2m)=3 求（x^(2m)）^3+(y^m)^6-(x^2*y)^3m * y^m 分解因式x^m+3-2x^m+2y+x^m+1y^2 分解因式：x^m+3-2x^m+2*y+x^m+1*y^2 分解因式x^m+3-（2x^m+2）y+（x^m+1)y^2 若多项式5x*x-2mxy-3y*y+4xy-3x+1中不含xy项,求（-（m*m*m）+2（m*m）-m+1）-（m*m*m+2m*m-m+4） 计算：2/1-m-1/m-1.2x/x-y -y/y-x -y-2x/x-y.12/m²-9 -2/m-3 若关于x,y的多项式:x^(m-2)y^2+mx^(m-2)+nx^3y(m-3)-2x(m-3)y+m+n (x-2y)^m+1/(x-2y)^m-3/(2y-x)^3怎么算 x^n*y*(-x^2y^m) 已知函数y=(m+1)x^m^2-3m-2+(m-1)x(m是常数) 因式分解：(x+y)^2-2m(x+y)+m^2 m(2x+y)²-m(x+2y)²