如图1已知抛物线y=x2 2x 3与x轴交于点a和点b与y轴相交于点c.1求abc三点的坐标2点d为射线cb上的一动点过点 Template




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tomski如图1已知抛物线y=x2 2x 3与x轴交于点a和点b与y轴相交于点c.1求abc三点的坐标2点d为射线cb上的一动点过点 coloring