已知实数a满足绝对值1992-a+长根号a-1993=a,求a-1992^2

问题描述:

已知实数a满足绝对值1992-a+长根号a-1993=a,求a-1992^2

由于a-1993必》=0
故式子可化成a-1992+长根号a-1993=a
a-1993=1992^2
a-1992^2=1993