①4a+b=0;
②9a+3b+c<0;
③若点A(﹣3,y1),点B(﹣ ,y2),点C(5,y3)在该函数图象上,则y1<y3<y2;
④若方程a(x+1)(x﹣5)=﹣3的两根为x1和x2 , 且x1<x2 , 则x1<﹣1<5<x2 .
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