已知实数a,b满足0<a<b+1,试判断a²-1与b²+2b大小
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已知实数a,b满足0<a<b+1,试判断a²-1与b²+2b大小
已知实数a,b满足0<a<b+1,试判断a²-1与b²+2b大小
已知实数a,b满足0<a<b+1,试判断a²-1与b²+2b大小
b²+2b-﹙a²-1﹚=﹙b+1﹚²-a²>0∴a²-1<b²+2b
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