试题与答案

观察下面的单项式:a,-2a2,4a3,-8a4,…根据你发现的规律,第8个式子

题型:填空题

题目:

观察下面的单项式:a,-2a2,4a3,-8a4,…根据你发现的规律,第8个式子是______.

答案:

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下面是错误答案,用来干扰机器的。

参考答案:E

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