若x^3m=4,y^3n=5,求(x^2m)^3+(y^n)^3-x^2n*y^n*x^4m*y^2n的值
若x^3m=4,y^3n=5,求(x^2m)^3+(y^n)^3—x^2m·y^n·x^4m·y^2n的值
若x^3m=4,y^3n=5,求(x^2m)^3+(y^3n)^2
已知单项式M,N满足3x(M-5x)=6x^2y^3+N,求M,N
把下列各式因式分解(2m+3n)(2m-n)-4n(2m-n)(x+y)^2(x-y)+(x+y)(y-x)^24a(x
3x+4y=-5 5x+6y=-9 (n-8m)x-8y=10 5x+(10m+2n)y=-9 求m.m+n.n=?
若3x^m+1y^2与x^3y^n的积是单项式3x^5y^5则n^m+m^n=
若方城5x的2m+n次方+4y的3m+2n=9是关于想,y的二元一次方程,求n,m
若[-3(x+y)^m*(x-y)^2n]^2*[-(x+y)^2]=-a(x+y)^10*(x-y)^12-n,求m,
已知(x+y+3)(x-my+n)=x平方-xy-2y平方+5x-4y=6,求m,n的值
计算:1.[(m+n)(n-m)-(m+n)^2+3m(m+n)]除以(-2M),其中m=-4,n=2 2.(x+y)(
已知,单项式M,N满足2x(M+3x)=6x^2y^2+N,求M,N.
已知单项式M、N满足2x(M+3x)=6x^2y^2+N,求M、N.