如果（x+2y）2+3（x+2y）﹣4=0，那么x+2y的值为_刷题宝

题干

如果（x+2y）²+3（x+2y）﹣4=0，那么x+2y的值为（　　）

A：1

B：-4

C：1或﹣4

D：﹣1或3

上一题下一题 0.0难度选择题更新时间:2017-08-02 01:08:14

答案(点此获取答案解析）

C

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