問題詳情
32. 如圖(十四)，將二次函數 y=31x2-999x+892的圖形畫在座標平面上，判斷方程式31x2-999x+892 =0的兩根，下列敘述何者正確？
(A)兩根相異，且均為正根
(B)兩根相異，且只有一個正根
(C)兩根相同，且為正根
(D)兩根相同，且為負根
參考答案
無參考答案
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