集合A=｛0,2 ,a｝,B=｛1,a^2｝,若A∪B=｛0,1,2,4,16｝,则a的值为

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集合A=｛0,2 ,a｝,B=｛1,a^2｝,若A∪B=｛0,1,2,4,16｝,则a的值为
集合A=｛0,2 ,a｝,B=｛1,a^2｝,若A∪B=｛0,1,2,4,16｝,则a的值为

集合A=｛0,2 ,a｝,B=｛1,a^2｝,若A∪B=｛0,1,2,4,16｝,则a的值为
A=｛0,2 ,a｝,B=｛1,a^2｝
A∪B = { 0,1,2,a,a^2} = ｛0,1,2,4,16｝
=> a=4#