根据题意得△=(-2)2-4×1×(-m)≥0,
解得m≥-1.
故答案为m≥-1.
若关于x的方程x2-2x-m=0有两个实数根,则m的取值范围是_.
若关于x的方程x2-2x-m=0有两个实数根,则m的取值范围是______.
数学人气:708 ℃时间:2019-08-22 15:04:24
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