题目内容
化简(3x2)3-7x3〔x3-x(4x2+1)〕=[ ]
A. 3x6-7x9+28x6-7x4＝31x6-7x9+7x4
B. 9x6-7x6+7x6+7x3＝9x6+7x3
C. 27x5-7x9-28x6-7x3
D. 27x6-7x6+28x6+7x4＝48x6+7x4
答案：D
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题目内容
化简(3x2)3-7x3〔x3-x(4x2+1)〕=[ ]
A. 3x6-7x9+28x6-7x4＝31x6-7x9+7x4
B. 9x6-7x6+7x6+7x3＝9x6+7x3
C. 27x5-7x9-28x6-7x3
D. 27x6-7x6+28x6+7x4＝48x6+7x4