Odpowiedzi

2009-12-01T19:04:57+01:00
[(√6+ √5)^(½)+(√6-√5)^(½) ]²=
=√6+√5+2((√6+ √5)^½(√6-√5)^½+√6-√5=
=2√6+2[(√6+ √5)(√6-√5)]^½=2√6+2(6-5)^½=2√6+2*1^½=2√6+2=
2(√6+1)
2009-12-01T19:05:44+01:00
[(√6+ √5)(1/2)+(√6-√5)^(1/2) ]^2 =
[√(√6+√5)+√(√6-√5)]²=
[√6+√5+2(√(√6+√5)*√(√6-√5))+√6-√5]=
2√6+2(√36-√30+√30-√25)=
2√6+2(6-5)=2√6+2