問題詳情
6. 下列哪一個式子無法再作因式分解？
(A) x2＋5x＋6
(B) 4x2＋4x＋1
(C) x2＋y2
(D) x2－y2。
(A) x2＋5x＋6
(B) 4x2＋4x＋1
(C) x2＋y2
(D) x2－y2。
參考答案
答案：C
難度：適中0.666667
統計：A(0),B(1),C(2),D(0),E(0)
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