若实数mn 满足3^m+9^n

若实数mn 满足3^m+9^n 若实数mn 满足3^m+9^n 若实数mn 满足3^m+9^n 1.已知实数m.n满足mn 若正实数m n满足2m+n+6=mn,则mn的最小值是 若实数m、n满足mn>0,且m^2+mn≤a(m^2+n^2)恒成立,则实数a的最小值是 已知实数mn满足m+1/2的绝对值与n^2-n+1/4互为相反数,化简并求值：（3m-2n）^2+(3m+2n)(3m-2n)-9(m+n)^2 已知正实数m,n,且满足mn=6,则m+3n的最小值是___. 已知实数m,n满足mn=3,m+n=5,求代数式m2n+mn2的值 已知实数m,n满足等式m2-m-根号3=0,n2-n-根号3=0,且m不等于n,求(mn)2-m-n 若正整数m, n满足m+n>mn,则m+n-mn=? 若实数m,n,p满足m-n=8,mn+p²+16=0,求m+n+p的值 若实数m,n,p满足m-n=8,mn+p^2+16=0,求m+n+p的值 已知m,n是实数,且满足m^2+2n^2+m-3/4n+17/36=0,则-mn^2的平方根是( ) 两个不相等的实数m,n满足m^-6m=4,n^-6n=4,则mn= 设实数m,n满足19m^2+20m+1=0,n^2+20n+19=0且mn不等于0,求2mn+3m+2/n的值 已知m,n是实数,且满足㎡+2n²+m-4/3 n+17/36=0,则-mn²的平方根是（） 已知m,n都是实数,且满足n=√m-4+√4-m+9,求√mn的值