用配方法求得代数式 3x2+6x−7 的最小值是_1．_刷题宝

题干

用配方法求得代数式 3x2+6x−7 的最小值是____．

上一题下一题 0.0难度选择题更新时间:2018-11-26 10:08:23

答案(点此获取答案解析）

-10

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