已知xy≠0且3x^2-2xy-8y^2=0,求x/y的值
2个回答
3x^2-2xy-8y^2=0,
(3x+4y)(x-2y)=0
3x+4y=0,或,x-2y=0
3x=-4y,或,x=2y
x/y=-4/3,或,x/y=2
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