1.36-m^2 2.4x^2-9y^2因式分解

1.36-m^2 2.4x^2-9y^2因式分解 计算:(1).(2x-3y)/(y-x)-(x+2y)/(x-y) (2).[5m/(m-3)+2m/(m+3)]*(m^2-9)/m 计算：2/1-m-1/m-1.2x/x-y -y/y-x -y-2x/x-y.12/m²-9 -2/m-3 x^n*y*(-x^2y^m) 因式分解：(x+y)^2-2m(x+y)+m^2 m(2x+y)²-m(x+2y)² (x+y)(m+n)2-(x+y)(m+n)2 4m(x-y)-2m^2(y-x)^3 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 因式分解m²+2m(x+y)+(x+y)² X^3*y^(m-1)*x^(m+y)*y^(2n+2)=x^9y^9 (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 解x,y的方程组x+2y=3m,x-y=9m,可得x=_____,y=_____没说用m表示,是否可以说是x=3m-2y,y=x-9m y^2-9(x+y)^2.a(x-y)-b(y-x)+c(x-y)..x（m+n)-y(n+m)+(m+n)..(x+y)^2-16(x-y)^2因式分解 计算题:9(x-y)^3[-1/9(x-y)^m+5](y-x)^2 已知方程组{4x+y=3m 2x-2y=9m,求x+y+m/3x-2y的值.