当x=-3时，代数式x3-2x2+ax+6的值是0，那么a=______．

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问题填空题

当x=-3时，代数式x³-2x²+ax+6的值是0，那么a=______．

答案

当x=-3时，

x³-2x²+ax+6=0，

即-27-18-3a+6=0，

解得a=-13．

填空题

动词填空。

1. I ______(babysit) my sister this evening.

2. Tom ______(visit) his cousins tomorrow afternoon.

3. You want to go to Canada for vacation. When ______you _____(go)?

4. Why not go _______(boat) on the river with me ?

5. We often _______(help) Granny Li ______(do) the housework.

6. China is a good place _______(go) sightseeing.

7. We plan _______(visit) Tibet next year.

8. How about _______(stay) at home this evening?

9. After I finished _______(go) shopping, I cooked at home.

10. He _______(take) a vacation in Hainan last winter.

问答题

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