问题
填空题
若(a-2009)2+2=2,则(a-2009)=______.
答案
[(a-2009)+]2
=(a-2009)2+2(a-2009)+2
=2+2(a-2009)=4
(a-2009)=1.
故答案为:1.
若(a-2009)2+2=2,则(a-2009)=______.
[(a-2009)+]2
=(a-2009)2+2(a-2009)+2
=2+2(a-2009)=4
(a-2009)=1.
故答案为:1.