1.
如图,在平面直角坐标系中,抛物线y=a1(x-2)2+2与y=a2(x-2)2-3的顶点分别为A,B,与x轴分别交于点O,C,D,E.若点D的坐标为(-1,0),则△ADE与△BOC的面积比为1.
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