规定m*n=3m+2n,若8*(x*2)=50,求x

若规定x*y=(x+1)(y+4)-(x+2)(y+3),请化简（m+1)*(n-1),并求m=2008,n=2007, 若规定x&y=(x+1)(y+4)-(x+2)(y+3),请化简(m+1)&(n-1),并求m=2008,n=2007时 规定m※n=3m+2n 若X ※9=27 求2(X※4)的值 规定m△n=5m+3n,若x△9=37,求2△（x△4） 已知x^m=3,x^n=6 求 x^m-n,x^3m-2n的值 已知x^m=2,x^n=3(m、n是正整数),求:(1)x^2m=3n;(2)x^2m+x^3n. 已知x^m=2,x^n=5.(1)x^m+n、x^m-n的值；（2）求x^3m-2n的值 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^m=1/3,x^n=2,求x^2m+3n