题目

方程（x－1）（x ＋2）＝ 2（x ＋2）的根是                  ． 答案：x1 ＝－2，x2 ＝ 3解析:略I’m not good at English, but I know Australia is an country.A. spoken; English-spoken B. speaking; English-speakingC. spoken; English-speaking D. speaking; English-spoken