問題詳情
4.小洋在因式分解 
的過程中，哪一個步驟有誤？
步驟一： 4x2-20x+25
步驟二：(2x)2-2✖ 2x✖5+52
步驟三：(2x-5)2
(A)步驟一
(B)步驟二
(C)步驟三
(D)小洋因式分解過程完全正確
參考答案
無參考答案
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