若m^2+n^2-n+4m+17/4=0,m=____,n=_____计算：(1)(2x-3y)^2-(3x+y)(3x-y)(2)(x+y)(x^2+y^2)(x-y)(3)(m-n-3)^2

已知m.n不等于0,若m*2-4mn+4n*2=0,求m+n/m-n 若m^2+n^2+2m-4n+5=0,则m+n=? 若m^2+n^2-6n+4m+13=0则m-n=? (m-n)^2*(m-n)^4=? 已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2= 若|m|=4,|n|=1/2 1,若m+n>m-n,则m+n=?2,若|m+n|=|m|+|n|若|m|=4,|n|=1/21,若m+n>m-n,则m+n=?2,若|m+n|=|m|+|n|,则m、n的值分别是： (m-2n)(2n+m)-(-3m-4n)(4n-3m)= [(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n 1若m=n,则|m|=|n|;2若m=—n,则|m|=|n|;3若|m|=|n|,则m=—n;4若|m|=|n|,则m=n哪个对 m+n/4m^-n^-m-2m/n^-4m^= 若(m-2n)/(2m+n)=3,则[3(m-2n)/(2m+n)-(m-2n)/[2(2m+n)] - {9(m-2n)/[4(2m+n)]}的值是? lm+n-3l+m^2n^2+4mn+4=0 求(4m-n)(m-2n)-(n-m）(-m-n) 若m×m+n×n-6n+4m+13=0,则m×m-n×n=? .4（m+n)^2*（m+n)^3-7（m+n)（m+n)^4+5（m+n)^5= 若有理数m,n满足m-2n=4,2m-n=3,则m+n等于 设m,n满足m^2+n^2+2m+4n+5=0,求n^m的值 若|m-n|=n-m,且|m|=4、|n|=3,则（m+n)^2= 若|m-n|=n-m,且|m|=4,|n|=3,则(m+n)^2=?