問題詳情
6.設二次方程式4x2 + 12x + c = 0的兩根差為2，則c =
(A) -
(B) -
(C)
(D)
(A) -
(B) -
(C)
(D)
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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