問題詳情
6. 已知 a、b、c 為整數，欲使一元二次方程式 ax2+2bx+c=0 的兩個解都是不含根式的分數，則 b2-4ac 的值不可能為何?
(A) 0
(B) 4
(C) 8
(D) 9.
(A) 0
(B) 4
(C) 8
(D) 9.
參考答案
無參考答案
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