若(mn)(2m-n)-2mn=O\'求m\'答案以n表示

已知m+n=3,mn=2/3,求mn-mn+mn的值已知m+n=3,mn=2/3,求mn-mn+mn的值已知m+n=3,mn=2/3,求mn-mn+mn的值原式提取mn得mn（m+2mn+n-3mn）

若m-n=4,mn=-1,求（-2mn+2m+3n）-（3mn+2n-2m）-（m+4n+mn）若m-n=4,mn=-1,求（-2mn+2m+3n）-（3mn+2n-2m）-（m+4n+mn）若m-n

若m-n=4,mn=-1求(9-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)若m-n=4,mn=-1求(9-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)若m-n

若m-n=4,mn=-1,求(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值兄弟们回答下吧啊。。若m-n=4,mn=-1,求(-2mn+2m+3n)-(3mn+2n-2m)-(

1.若m-n=4,mn=1,求（9-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值2.已知代数式2a的平方+3a+1的值为6,求代数式6a的平方+9a+5的值3.长为（2a+3b

若m-n=4,mn=-1,求(-2mn+m+n)-(3mn+5n-5m)-(m+4n-3mn)的值若m-n=4,mn=-1,求(-2mn+m+n)-(3mn+5n-5m)-(m+4n-3mn)的值若m

已知m+n=-4mn=2求mn已知m+n=-4mn=2求mn已知m+n=-4mn=2求mn∵m+n=-4∴m=-4-n∴mn=n*(-4-n)=2n*n+4n+2=0n=负二加减根号二∴当n=负二加根

若m^2+n^2=4mn,求(m^2-n^2)/mn的值.若m^2+n^2=4mn,求(m^2-n^2)/mn的值.若m^2+n^2=4mn,求(m^2-n^2)/mn的值.答：m^2+n^2=4mn

已知MN^2=-6,求-MN(M^2N^5-MN^3-N)的值已知MN^2=-6,求-MN(M^2N^5-MN^3-N)的值已知MN^2=-6,求-MN(M^2N^5-MN^3-N)的值-MN(M^2

若m-n=4,mn=-1,求代数式（9-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值若m-n=4,mn=-1,求代数式（9-2mn+2m+3n)-(3mn+2n-2m)-(m+

若m-n=4,mn=-1,求代数式（9-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值若m-n=4,mn=-1,求代数式（9-2mn+2m+3n)-(3mn+2n-2m)-(m+

已知:m+n=9,mn=14,求m方-mn-n方的值.我做到m方-mn-n方+2mn-2mn,思路你看对不对,要过程,详细一点,谢谢.已知:m+n=9,mn=14,求m方-mn-n方的值.我做到m方-

已知m-mn=21,mn-n=15,求m-n与m-2mn+n的值.已知m-mn=21,mn-n=15,求m-n与m-2mn+n的值.已知m-mn=21,mn-n=15,求m-n与m-2mn+n的值.因

已知mn/m+n=2求3m-5mn+3n/-m+3mn-n已知mn/m+n=2求3m-5mn+3n/-m+3mn-n已知mn/m+n=2求3m-5mn+3n/-m+3mn-n由于:mn/(m+n)=2

已知M+N分之MN=2,求-m+3mn-n分之3m-5mn+3n已知M+N分之MN=2,求-m+3mn-n分之3m-5mn+3n已知M+N分之MN=2,求-m+3mn-n分之3m-5mn+3n答：mn

已知mn/m+n=2,求3m-5mn+3n/（-m）+3mn-n已知mn/m+n=2,求3m-5mn+3n/（-m）+3mn-n已知mn/m+n=2,求3m-5mn+3n/（-m）+3mn-n3m-5

已知mn／m+n=2,求3m-5mn+3n/-m+3mn-n的值已知mn／m+n=2,求3m-5mn+3n/-m+3mn-n的值已知mn／m+n=2,求3m-5mn+3n/-m+3mn-n的值由于:m

m-n=7mn=-5求(3m+5n+4mn)-(2n-4n+6mn)m-n=7mn=-5求(3m+5n+4mn)-(2n-4n+6mn)m-n=7mn=-5求(3m+5n+4mn)-(2n-4n+6m

若1/m-1/n=3,求2m-3mn-2n/m-2mn-n的值若1/m-1/n=3,求2m-3mn-2n/m-2mn-n的值若1/m-1/n=3,求2m-3mn-2n/m-2mn-n的值2m-3mn-

若(1/m)-(1/n)=4,求(2m-3mn-2n)/(m-2mn-n)的值若(1/m)-(1/n)=4,求(2m-3mn-2n)/(m-2mn-n)的值若(1/m)-(1/n)=4,求(2m-3m