【给好评】解方程组 {x^2-2xy-3y^2=0 {xy+y^2=4【给好评】解方程组{x^2-2xy-3y^2=0{xy+y^2=4

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【给好评】解方程组 {x^2-2xy-3y^2=0 {xy+y^2=4【给好评】解方程组{x^2-2xy-3y^2=0{xy+y^2=4

【给好评】解方程组 {x^2-2xy-3y^2=0 {xy+y^2=4【给好评】解方程组{x^2-2xy-3y^2=0{xy+y^2=4
【给好评】解方程组 {x^2-2xy-3y^2=0 {xy+y^2=4
【给好评】解方程组
{x^2-2xy-3y^2=0
{xy+y^2=4

【给好评】解方程组 {x^2-2xy-3y^2=0 {xy+y^2=4【给好评】解方程组{x^2-2xy-3y^2=0{xy+y^2=4