若二次函数y=x2+bx的图象的对称轴是直线x=2，则关于x的方程x2+bx=﹣4的解为_刷题宝

题干

若二次函数y=x²+bx的图象的对称轴是直线x=2，则关于x的方程x²+bx=﹣4的解为（）

A：x₁=0，x₂=4

B：x₁=x₂=2

C：x₁=2，x₂=﹣2

D：x₁=x₂=﹣2

上一题下一题 0.0难度选择题更新时间:2019-05-31 01:44:58

答案(点此获取答案解析）

B

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