問題詳情
1. （ ）展開並簡化(x＋2)2－(2x－1)2，可得常數項為多少？
(A)－3
(B)1
(C)3
(D)5
(A)－3
(B)1
(C)3
(D)5
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
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