Usun niewymiernosc z mianownika
8/ pierwiastek z 5 - 3
8 8· ( √5 + 3) 8 (√5 + 3) 8 (√5 + 3) 2 ( √5 + 3)
------------- = ----------------------------- = -------------------- = ---------------------- = ----------------- =
√5 - 3 (√5 - 3) ( √5 + 3) 5 - 9 -4 -1
= -2 (√5 + 3) = -2√5 - 6
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8 8· ( √5 + 3) 8 (√5 + 3) 8 (√5 + 3) 2 ( √5 + 3)
------------- = ----------------------------- = -------------------- = ---------------------- = ----------------- =
√5 - 3 (√5 - 3) ( √5 + 3) 5 - 9 -4 -1
= -2 (√5 + 3) = -2√5 - 6