问题
解答题
已知|a-2|+
|
答案
根据题意得，a-2=0，b-3=0，
解得a=2，b=3，
∴a2-2b=22-2×3=4-6=-2．
搜题请搜索小程序“爱下问搜题”
已知|a-2|+
|
根据题意得，a-2=0，b-3=0，
解得a=2，b=3，
∴a2-2b=22-2×3=4-6=-2．
| 选择正确的句子完成下面的对话，有两个选项是多余项。 | |
| Kitty: 1 Millie. Millie: Good afternoon, Kitty. 2 Kitty: I live on Spring Road. Millie: I live on Spring Road, too. Kitty: 3 Millie: Of course. Here's my address. Kitty: Great. 4 Millie: Football. Kitty: 5 But I'm not good at it. Millie: Don't worry, I think you can play it well. Then we can go and play football after school. Kitty: OK.
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