问题
填空题
若（x+3）2+
|
答案
∵（x+3）2+
=0，y-2
∴x+3=0，x=-3，
y-2=0，y=2，
∴xy=-3×2=-6，
故答案为：-6．
搜题请搜索小程序“爱下问搜题”
若（x+3）2+
|
∵（x+3）2+
=0，y-2
∴x+3=0，x=-3，
y-2=0，y=2，
∴xy=-3×2=-6，
故答案为：-6．
| 根据所给句子，选择最佳的应答语。每个选项只能用一次。 | |
| ( )1. What are you doing now? ( )2. Excuse me. Do you know where I can buy some stamps? ( )3. Could you tell me how to get to Killeen's Cafe? ( )4. Where do you often hang out on Sunday? ( )5. Have you watched Monkey King?
|