2016-04-07 19:04发布
a^2-2a+b^2+4b+5=0
(a^2-2a+1)+(b^2+4b+4)=0
(a-1)^2+(b+2)^2=0
a=1 b=-2
(a+b)^2016
=(1-2)^2016
=(-1)^2016
=1
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a^2-2a+b^2+4b+5=0
(a^2-2a+1)+(b^2+4b+4)=0
(a-1)^2+(b+2)^2=0
a=1 b=-2
(a+b)^2016
=(1-2)^2016
=(-1)^2016
=1
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