数理答疑团为您解答
题意可知ab=1,x+y=0,
原式=2012ab-2012(x+y)=2012
若ab互为倒数,xy互为相反数,则2012ab-2012x-2012y=?
若ab互为倒数,xy互为相反数,则2012ab-2012x-2012y=?
数学人气:851 ℃时间:2020-03-22 16:19:34
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