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设集合 \(A = \left\{ {1,4,x} \right\}\) , \(B = \left\{ {1,{x^2}} \right\}\) ,且 \(A \cup B = \left\{ {1,4,x} \right\}\) ,则满足条件的实数 \(x\) 的值是( )
A.-2
B.2
C.1
D.0
参考答案:ABD
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