2x²+3xy-2y²题目改一下是2x²+3xy-y²
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2x²+3xy-2y²题目改一下是2x²+3xy-y²
2x²+3xy-2y²
题目改一下是2x²+3xy-y²
2x²+3xy-2y²题目改一下是2x²+3xy-y²
2x²+3xy-2y²
=(2x-y)(x+2y)
B|=5,AB方程为4x-3y+4=0
设C(x,y),由题意得C到直线AB的距离为4,根据点到直线的距离公式,|4x-3y+4|=4*5
轨迹方程为4x-3y-16=0和4x-3y+24=0