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R²-2Rr+R²+2Rr1+R²+2Rr2+R²+2Rr3=4R²+2R(r1+r2+r3-r)=4R²+2R(r+4R-r)=12R².-.
http://ahmetelmas.wordpress.com/2010/05/15/geo-geo/
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R²-2Rr+R²+2Rr1+R²+2Rr2+R²+2Rr3
ReplyDelete=4R²+2R(r1+r2+r3-r)
=4R²+2R(r+4R-r)
=12R²
.-.
http://ahmetelmas.wordpress.com/2010/05/15/geo-geo/
ReplyDelete