若ax^3my^12=3x^3y^2n*4x^6y^8,求(m+2n-a)^2
若ax^3my^12=3x^3y^2n*4x^6y^8,求(m+2n-a)^2
若ax的3m次方y^12/3x^3y^2n=4x^6y^8,求(2m+n-a)^-n的值
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
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ax的3m次方乘以y的12次方除以(3x的3次方y的2n次方)=4x的6次y的8次,求(21m+n-a)的-n次方的值
合并同类项 3a-5a+6a x^2y+ax^2y-6x^2y -3mn^2+8m^2n-7m
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.
已知单项式M,N满足3x(M-5x)=6x^2y^3+N,求M,N
已知,单项式M,N满足2x(M+3x)=6x²y²+N,求M,N