Answers

2015-01-26T19:54:49+05:30
(n-10)(n-10)+(10-n)=0
n(n-10)-10(n-10)+10-n=0
n^2-10n-10n+100+10-n=0
n^2-21n+110=0
n^2-11n-10n+110=0
n(n-11)-10(n-11)=0
(n-11)(n-10)=0
n=11,10
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