已知正整数x,y满足x^-7xy+12y^

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已知正整数x,y满足x^-7xy+12y^已知正整数x,y满足x^-7xy+12y^已知正整数x,y满足x^-7xy+12y^X²-7XY+12Y²x,y是正整数x^2-7xy+1

已知正整数x,y满足x^-7xy+12y^
已知正整数x,y满足x^-7xy+12y^

已知正整数x,y满足x^-7xy+12y^
X²-7XY+12Y²

x,y是正整数
x^2-7xy+12y^2<0 即 ( x/y)^2-7*(x/y)+12<0即(x/y-3)(x/y-4)<0
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