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1.已知 3x2 − 21x − 24 = 3(x + 1)(x − 8),則下列何者是 3x2 − 21x − 24 的因式? (A)x − 1 (B)x + 8 (C) 3x + 3 (D) 3x
問題詳情
1.已知 3x2 − 21x − 24 = 3(x + 1)(x − 8),則下列何者是 3x2 − 21x − 24 的因式?
(A)x − 1
(B)x + 8
(C) 3x + 3
(D) 3x − 8
參考答案
答案:C
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