已知x^3m=8,y^3n=27,求(2^2m)^3+(y^n)^3-x^2m*y^n的值.
已知x^3m=8,y^3n=27,求(2^2m)^3+(y^n)^3-x^2m*y^n的值.
已知x^3m=8,y^3n=27,求(x^2m)^3+(y^n)^3-x^2m*y^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=2m-3n根号m+n+3是m+n+3的算术平方根,y=m-n+1根号m+2n是m+2n的立方根,求(x-y)的2
已知x=^m+n=3,y=^m+n+2,求代数式(1/3x^my^n)*(-1/2x^ny^m)的值
已知多项式2x2+xy-3y2-x-4y-1=(2x+3y+m)(x-y+n),求m、n的值.
已知:单项式M,N满足2x(M+3x)=6x^2y^2+N,求M,N的值.
已知-2x^m+2n+y^3m+4n=9是关于x,y的二元一次方程,求m+n.
已知单项式M N满足3x(M-5x)=6x^2y^2 求M N