m^2+n^2=6n-4m-13,则m^2-n^2=?

m^2+n^2=6n-4m-13,则m^2-n^2=? m^2+4m+n^2-6n+13=0,则m+n= 若m^2+n^2-6n+4m+13=0则m-n=? 已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2= 若m×m+n×n-6n+4m+13=0,则m×m-n×n=? (m-n)^2*(m-n)^4=? 若x^2+n^2—6n+4m+13=0,则m-n (m-2n/n-m)-(n/m-n)= 如果m和n互为相反数,则m+2m+3m+4m+5m+5n+4n+3n+2n+n= 已知实数m,n,且m>n>0,m²+n²=4mn,则m²﹣n²/mn的值等于∵(m+n)²=m²+2mn+n²,(m-n)²=m²-2mn+n²,m²+n²=4mn.(m+n)²=6mn(m-n)²=2mn(m+n)²(m-n)²=12m²n²mm³-2m
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=? 若m^2+n^2=6n-4m-13,则m^2-n^2=( ) m^2+n^2-6n+4m+13=0,则m^2-n^2= 若m^2+n^2=6n-4m-13,则m^2-n^2=() 若m^2+n^2-6n+4m+13=0,则m^2-n^2=? m+n/4m^-n^-m-2m/n^-4m^= 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)=