Odpowiedź:
3.
a)
25/(√11 + 1) = 25(√11 - 1)/[(√11+1)(√11-1)] = 25(√11 - 1)/(11 - 1) =
= 25(√11 - 1)/10 = 5(√11 - 1)/2
b)
12/∛4 = 12∛4/(∛4 * ∛2) = 12∛4/∛8 = 12∛4/2 = 6∛4
