已知2x2+5xy-3y2=0且xy不等于0,求x:y的值已知2x2+5xy-3y2=0且xy不等于0,求xy的值
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已知2x2+5xy-3y2=0且xy不等于0,求x:y的值已知2x2+5xy-3y2=0且xy不等于0,求xy的值已知2x2+5xy-3y2=0且xy不等于0,求x:y的值已知2x2+5xy-3y2=
已知2x2+5xy-3y2=0且xy不等于0,求x:y的值已知2x2+5xy-3y2=0且xy不等于0,求xy的值
已知2x2+5xy-3y2=0且xy不等于0,求x:y的值
已知2x2+5xy-3y2=0且xy不等于0,求xy的值
已知2x2+5xy-3y2=0且xy不等于0,求x:y的值已知2x2+5xy-3y2=0且xy不等于0,求xy的值
2x2+5xy-3y2=0
(2X-Y)(X+3Y)=0 ==>X=Y或者 X=-3Y
XY不等于0,即X,Y都不等于0
所以X:Y=X/Y=1或者-1/3
2x2+5xy-3y2=0
(X+3Y)(2X-Y)=0
X=-3Y 或者 X=0.5Y
xy不等于0,
所以x:y=X/Y=-3或0.5
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