摘要:7.抛物线y2=2px与直线ax+y-4=0.交于两点A.B.其中点A的坐标为(1.2).设抛物 线的焦点为F.则|FA|+|FB|等于 A.7 B. C.6 D.5 (文) 抛物线y2=4x与直线2x+y-4=0交于两点A.B.设抛物线的焦点为F.则|FA|+|FB|等于 A.7 B. C.6 D.5
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