如图,正方形ABCD的边长为20CM,点E在边CB的延长线上,且EB=20CM,点P在边DC上运动,EP与AB的交点为F,设DP=x CM , △EFB与四边形AFPD的面积和为y 平方厘米,则y与x的关系式为
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![如图,正方形ABCD的边长为20CM,点E在边CB的延长线上,且EB=20CM,点P在边DC上运动,EP与AB的交点为F,设DP=x CM , △EFB与四边形AFPD的面积和为y 平方厘米,则y与x的关系式为](/uploads/image/z/12389248-64-8.jpg?t=%E5%A6%82%E5%9B%BE%2C%E6%AD%A3%E6%96%B9%E5%BD%A2ABCD%E7%9A%84%E8%BE%B9%E9%95%BF%E4%B8%BA20CM%2C%E7%82%B9E%E5%9C%A8%E8%BE%B9CB%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%B8%8A%2C%E4%B8%94EB%3D20CM%2C%E7%82%B9P%E5%9C%A8%E8%BE%B9DC%E4%B8%8A%E8%BF%90%E5%8A%A8%2CEP%E4%B8%8EAB%E7%9A%84%E4%BA%A4%E7%82%B9%E4%B8%BAF%2C%E8%AE%BEDP%3Dx++CM+%2C+%E2%96%B3EFB%E4%B8%8E%E5%9B%9B%E8%BE%B9%E5%BD%A2AFPD%E7%9A%84%E9%9D%A2%E7%A7%AF%E5%92%8C%E4%B8%BAy+%E5%B9%B3%E6%96%B9%E5%8E%98%E7%B1%B3%2C%E5%88%99y%E4%B8%8Ex%E7%9A%84%E5%85%B3%E7%B3%BB%E5%BC%8F%E4%B8%BA)
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