Odpowiedzi

2010-01-19T20:45:40+01:00
4/√2-1*√2+1 nad √2+1 = 4√2-4 nad 2-1 = 4√2-4=4(√2-1)
2010-01-19T20:46:51+01:00
4
----- =
√2-1
4√2+4
-------=
2-1

4√2+4




2010-01-19T20:50:55+01:00
4/√2-1=4(√2-1) / ( √2-1)( √2+1) = 4√2-4 / 1=4√2-4