若X-Y=5

若(X×X+Y×Y)(X×X+Y×Y-5)=36,则X×X+Y×Y＝若(X×X+Y×Y)(X×X+Y×Y-5)=36,则X×X+Y×Y＝若(X×X+Y×Y)(X×X+Y×Y-5)=36,则X×X+Y×

若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(

若3x=5y,则x:y=________,(x-y):y=______若3x=5y,则x:y=________,(x-y):y=______若3x=5y,则x:y=________,(x-y):y=_

若3x-5y=0,则x+y/x=（）,x-y/y=（）,2x-3y/2x+3y=()若3x-5y=0,则x+y/x=（）,x-y/y=（）,2x-3y/2x+3y=()若3x-5y=0,则x+y/x=

若x-y/x+y=5,求x-y/2x+2y+5x+5y/3x-3y的值若x-y/x+y=5,求x-y/2x+2y+5x+5y/3x-3y的值若x-y/x+y=5,求x-y/2x+2y+5x+5y/3x

若x+y分之x-y=3,求式子x+y分之5(x-y)—2(x-y)分之x+y的值若x+y分之x-y=3,求式子x+y分之5(x-y)—2(x-y)分之x+y的值若x+y分之x-y=3,求式子x+y分之

若x-y分之x+y=3,求式子x+y分之5(x-y)—2（x-y）分之x+y的值若x-y分之x+y=3,求式子x+y分之5(x-y)—2（x-y）分之x+y的值若x-y分之x+y=3,求式子x+y分之

(5)若x/2=y/3(y不为0）则x/y=____,x+y/y=___,y/x-y=___.(5)若x/2=y/3(y不为0）则x/y=____,x+y/y=___,y/x-y=___.(5)若x/

（x+y-5)*（x+y-5)+（x-y+3)=0x*x-y*y（x+y-5)*（x+y-5)+（x-y+3)=0x*x-y*y（x+y-5)*（x+y-5)+（x-y+3)=0x*x-y*y这是什么

已知:3x-5y=0,求x/y,x-y/y,x-y/x已知:3x-5y=0,求x/y,x-y/y,x-y/x已知:3x-5y=0,求x/y,x-y/y,x-y/x3x-5y=03x=5y→x/y=5/

若5x=0.8y,则x:y=():()若5x=0.8y,则x:y=():()若5x=0.8y,则x:y=():()x/y=0.8/5=4/254：25

若x-y=3,则-x+5+y=()若x-y=3,则-x+5+y=()若x-y=3,则-x+5+y=()答案2

若2x-5y=0,则y：x若2x-5y=0,则y：x若2x-5y=0,则y：x

若5:x=3:y,那么x和y若5:x=3:y,那么x和y若5:x=3:y,那么x和y5:x=3:y,所以：3x=5yx=3分之5y

若|x|=3,|y|=5且|x+y|=-(x+y)求x-y的值若|x|=3,|y|=5且|x+y|=-(x+y)求y-x的值若|x|=3,|y|=5且|x+y|=-(x+y)求x-y的值若|x|=3,

若x>0,y>0,且√x(√x+√y)=3√y(√x+5√y),求2x+2√x*√y+3y/x-√x*√y+y若x>0,y>0,且√x(√x+√y)=3√y(√x+5√y),求2x+2√x*√y+3y

若5x-4y=6,4x-5y=8,则x+y=(),x-y=()若5x-4y=6,4x-5y=8,则x+y=(),x-y=()若5x-4y=6,4x-5y=8,则x+y=(),x-y=()若5x-4y=

若5x+3y=3x+4y=x+2y+6,则x+y=___若5x+3y=3x+4y=x+2y+6,则x+y=___若5x+3y=3x+4y=x+2y+6,则x+y=___3x+4y=x+2y+62x-x

若8x=5y,则y除以x=多少,x+y除以x-y=多少?若8x=5y,则y除以x=多少,x+y除以x-y=多少?若8x=5y,则y除以x=多少,x+y除以x-y=多少?y除以x=8/5,x+y除以x-

若|X|=3,|y|=5,且|x+y|=-(x+y),求x-y的值.若|X|=3,|y|=5,且|x+y|=-(x+y),求x-y的值.若|X|=3,|y|=5,且|x+y|=-(x+y),求x-y的