若(-5^m+1b^2a-1)(2a^nb^m)=-10a^4b^4,则m-n的值等于多少?

(a-b)^m*(a-b)^n*(b-a)^2n*(b-a)^2m+1(m 为正整数) 若(a^m+1b^n+2)·(a^2n-1b^2m)=a^5b^9,求m^2n的值. 若m-2n=2,n-a=-3,a-1/2b=5则(m-2a)(m-b)/(2n-b)的值 若m-2n=2,n-a=-3,a-1/2b=5则(m-2a)(m-b)/(2n-b)的值 若（a^m+1b^n+2）·(a^2n-1b^2m)=a^5b^3则m+n 若a^m+1* b^n+2*a^2n-1*b^2m=a^5*b^3 则m+n=?大哥大姐帮帮忙 若(a^m+1b^n+2)·(a^2n-1b^2m)=a^5b^9,则m+n的值是? 若（a^m+1×b^n+2）×（a^2n-1×b^2m）=a^5b^6,求m+n的值 若（a^m+1 b^n+2)•（a^2n-1 b^2m)=a^5b^3,试求m+n的值. 若a^7*b^5÷a^m-1*b^n+1=a^2n-3*b^m+5,求m-n 若a^7*b^5÷a^m-1*b^n+1=a^2n-3*b^m+5,求m-n 速度了 若（a^m+1*b^n+2)(a^2n-1*b^2n)=a^5*b^5^ 则求m+n的值 已知 m/n＝5/3,求m/m+n +m/m-n -n^2/m^2-n^2的值 已知1/a+1/b＝8/a+b,求b/a+a/b的值 (－a^m-1b^n-2+3a^m+1b^n)/(-2a^m-2b^n-2) 若(a^m+1b^n+2)·（a^2n-1·b）=a^5b^3,求m+n的值. 若(a^m+1b^n+2)·（a^2n-1·b）=a^5b^4,求m+n的值. 若(a^m+1b^n+2)·（a^2n-1·b）=a^5b^4,求m+n的值. 若a^m+1 b^n+2·（a^2n-1·b）=a^5 b^3,求m+n的值