(1)计算:
; (2)解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b77f00f7e6b24d41aeda895f6d2c905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffb5c0e21f3e0c7534d9e09a914ca52.png)
18-19九年级·浙江·阶段练习 查看更多[1]
(已下线)【新东方】【五地11】【初三】
更新时间:2019-11-14 21:56:11
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