设全集为R,A=[xIx^2-5x-6>0},B={xIIx-5I

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设全集为R,A=[xIx^2-5x-6>0},B={xIIx-5I设全集为R,A=[xIx^2-5x-6>0},B={xIIx-5I设全集为R,A=[xIx^2-5x-6>0},B={xIIx-5IA

设全集为R,A=[xIx^2-5x-6>0},B={xIIx-5I
设全集为R,A=[xIx^2-5x-6>0},B={xIIx-5I

设全集为R,A=[xIx^2-5x-6>0},B={xIIx-5I
A={x|x<-1或x>6},B={x|5-a<x<5+a},
∵11∈B,
∴5-a<11<5+a,
∴a>6,
∴5-a<-1,5+a>11,
∴A∪B=R,选D