x²-x-2>0 4.若不等式组{2x²*(5+2k)x+5k<0 的整数解只有-2,求k的取值范围.(a²-4)x-2(a+2)x+2≥0的解集为R,求a的取值范围.
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 21:43:23
![x²-x-2>0 4.若不等式组{2x²*(5+2k)x+5k<0 的整数解只有-2,求k的取值范围.(a²-4)x-2(a+2)x+2≥0的解集为R,求a的取值范围.](/uploads/image/z/5330563-43-3.jpg?t=x%26%23178%3B-x-2%EF%BC%9E0+4.%E8%8B%A5%E4%B8%8D%E7%AD%89%E5%BC%8F%E7%BB%84%EF%BD%9B2x%26%23178%3B%2A%EF%BC%885%2B2k%EF%BC%89x%2B5k%EF%BC%9C0+%E7%9A%84%E6%95%B4%E6%95%B0%E8%A7%A3%E5%8F%AA%E6%9C%89-2%2C%E6%B1%82k%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4.%28a%26%23178%3B-4%EF%BC%89x-2%EF%BC%88a%EF%BC%8B2%EF%BC%89x%2B2%E2%89%A50%E7%9A%84%E8%A7%A3%E9%9B%86%E4%B8%BAR%2C%E6%B1%82a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4.)
x²-x-2>0 4.若不等式组{2x²*(5+2k)x+5k<0 的整数解只有-2,求k的取值范围.(a²-4)x-2(a+2)x+2≥0的解集为R,求a的取值范围.
x²-x-2>0 4.若不等式组{2x²*(5+2k)x+5k<0 的整数解只有-2,求k的取值范围.
(a²-4)x-2(a+2)x+2≥0的解集为R,求a的取值范围.
x²-x-2>0 4.若不等式组{2x²*(5+2k)x+5k<0 的整数解只有-2,求k的取值范围.(a²-4)x-2(a+2)x+2≥0的解集为R,求a的取值范围.
-3