問題詳情
17.若二次函數y＝3x2＋bx＋c與x軸的交點坐標為(1 , 0)及(－5 , 0)，則b＋c＝？
(A)20
(B) 9
(C)－2
(D)－3
(A)20
(B) 9
(C)－2
(D)－3
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增
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