(本题8分)已知二次函数y=-x2+bx+c的图象经过A(2,0),B(0,-6

(本题8分)已知二次函数y=-x2bx+c的图象经过A(2,0),B(0,-6)两点.

   (1)求这个二次函数的解析式;

   (2)设该二次函数图象的对称轴与x轴交于点C,连接BA、BC,求△ABC的面积和周长.

 

答案

解析:略

 

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