题目

Roger was a thief, but he wasn’t very clever. When he was in school, he stole apples or oranges from other children. Sometimes he stole pencils or books from other children. But he always got caught.The teacher spoke to Roger’s parents and they tried to stop him from stealing things, but Roger wouldn’t stop. He kept stealing.When he was older, he began to steal from stores, but he was still stupid. Once, he went into a store wearing the clothes he had stolen the day before. They still had the price tags (标签) on them, and the store manager called the police. They warmed him that he wo（2006•宁波）如图，抛物线y=ax2+bx+c与x轴交于点B（1，0），C（-3，0），且过点A（3，6）．（1）求a、b、c的值；（2）设此抛物线的顶点为P，对称轴与线段AC相交于点Q，连接CP、PB、BQ，试求四边形PBQC的面积．