（）下列利用乘法公式因式分解的過程中，哪一個步驟開始發生錯誤？步驟一：9x2＋12x＋4 步驟二：(3x)2＋2•3x•2＋22 步驟三：(3x＋2)2 (A)步驟一　(B)步驟二(C)步

問題詳情

8. （）下列利用乘法公式因式分解的過程中，哪一個步驟開始發生錯誤？

步驟一：9x2＋12x＋4

步驟二：(3x)2＋2•3x•2＋22

步驟三：(3x＋2)2

(A)步驟一　
(B)步驟二
(C)步驟三　
(D)過程完全正確

參考答案

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