BV1h84y117rt

有

5x2-5y2+5x-2y=0

且

x2+y2=1

即

2x2-8y2+5x-2y+3=0

且

x2+y2=1

即

x-2y+1=0

且

x2+y2=1

即

(2y-1)2+y2-1=0

即

5y2-4y=0

即

y=4/5

x=3/5