若|x- |+(2y+1) 2 =0,则x 2 +y 2 的值是 [ ] A.0 &n...

若|x- |+(2y+1) 2 =0,则x 2 +y 2 的值是 [ ] A.0 B. C. D.1
2025-05-08 17:59:26
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回答1:

B