x-2y-1=0 .x=2y+1代入x²-3y²-6=0得：4y²+1+4y-3y²-6=0,y²+4y-5=0,
（y+5）*（y-1）=0,y1=-5,y2=1,代入x-2y-1=0得：x1=-9,x2=3.
解方程组x-2y-1=0 .x平方-3倍的y方-6=0,怎样解
解方程组x-2y-1=0 .x平方-3倍的y方-6=0,怎样解
数学人气：124 ℃时间：2019-11-02 19:06:07
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