已知x^2m=2,y^n=3.求(1)(x^2)^2m;(2)x^6my^3n
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=2,y^n=3.求(1)(x^2)^2m;(2)x^6my^3n
已知x=^m+n=3,y=^m+n+2,求代数式(1/3x^my^n)*(-1/2x^ny^m)的值
已知单项式M N满足3x(M-5x)=6x^2y^2 求M N
已知x^m=3,x^n=6 求 x^m-n,x^3m-2n的值
已知(x+y+3)(x-my+n)=x平方-xy-2y平方+5x-4y=6,求m,n的值
已知单项式M、N满足2x(M+3x)=6x^2y^2+N,求MN
已知x^m=1/3,x^n=2,求x^2m+3n
已知x^m=2,x^n=3(m、n是正整数),求:(1)x^2m=3n;(2)x^2m+x^3n.