( )若 b＞0，x2－3x－b＝0 的兩根均為整數，則 b 可能是下列哪一個數？(AB) 2×3×7 (AC) 2×5×7 (AD) 3×5×7 (AE) 5×7×11 (BC) 2×3×5

問題詳情

3. ( )若 b＞0，x2－3x－b＝0 的兩根均為整數，則 b 可能是下列哪一個數？(AB) 2×3×7 (AC) 2×5×7 (AD) 3×5×7 (AE) 5×7×11 (BC) 2×3×5 (BD) 3×5×11

參考答案

答案：A,C
難度：計算中-1
書單：沒有書單，新增

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