已知绝对值2006-a=根号a-2007=a,求a-2006的平方+18的值.

来源:学生作业帮助网 编辑:作业帮 时间:2024/06/08 08:19:10

已知绝对值2006-a=根号a-2007=a,求a-2006的平方+18的值.

因为a-2007>0
所以a>2007
因为2006

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