x^m.y.(-2x^3y^n)^2=4x^7y^7,求:m、n
若[-3(x+y)^m*(x-y)^2n]^2*[-(x+y)^2]=-a(x+y)^10*(x-y)^12-n,求m,
(x+y)(m+n)2-(x+y)(m+n)2
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
选择题:设集合M={(x,y)|2x+3y=8},N={(x,y)|3x+2y=7},则M∩N=
若x^3m=4,y^3n=5,求(x^2m)^3+(y^3n)^2
若x^3m=4,y^3n=5,求(x^2m)^3+(y^n)^3—x^2m·y^n·x^4m·y^2n的值
3x+4y=-5 5x+6y=-9 (n-8m)x-8y=10 5x+(10m+2n)y=-9 求m.m+n.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
已知x^3m=8,y^3n=27,求(x^2m)^3+(y^n)^3-x^2m*y^n