Oblicz : a) √12 1/4 √4 21/25 √1 7/9 √4 25/36 √1 24/25 b) √1,21 √2,25 √2,89 √6,25 √1,44 c) ∛15 5/8 ∛1 61/64 ∛4 17/27 ∛2 93/125 ∛3 3/8 d) ∛0,000125 ∛0,000064 ∛0,000000008 Proszę o odpowiedz na teraz

Oblicz : a) √12 1/4 √4 21/25 √1 7/9 √4 25/36 √1 24/25 b) √1,21 √2,25 √2,89 √6,25 √1,44 c) ∛15 5/8 ∛1 61/64 ∛4 17/27 ∛2 93/125 ∛3 3/8 d) ∛0,000125 ∛0,000064 ∛0,000000008 Proszę o odpowiedz na teraz
Odpowiedź

a) √12 1/4 = √ ( 49/4) = 7/2 = 3 1/2 √4 21/25 =√ (121/25) = 11/5 = 2 1/5 √1 7/9 = √(16/9) = 4/3 = 1 1/3 √4 25/36 =√(169/36) = 13/6 = 2 1/6 √1 24/25=√ (49/25) = 7/5 = 1 2/5 b) √1,21 = √(121/100) = 11/10 = 1 1/10 √2,25 =√( 2 1/4) = √(9/4) = 3/2 = 1 1/2 √2,89 =√(289/100)= 17/10 = 1 7/10 √6,25 =√(625/100) = 25/10 = 2 1/2 √1,44=√(144/100) = 12/10 =1 2/10 =1 1/5 c) ∛15 5/8 = ∛(125/8) = 5/2 = 2 1/2 ∛1 61/64 =∛(125/64)=5/4 = 1 1/4 ∛4 17/27 =∛(125/27) = 5/3 = 1 2/3 ∛2 93/125 = ∛(343/125) = 7/5 = 1 2/5 ∛3 3/8 =∛(27/8)=3/2 = 1 1/2 d) ∛0,000125=∛(125 * 0,000001)=5*0,01 = 0,05   ∛0,000064 = ∛(64*0,000001) = 4*0,01=0,04  ∛0,000000008 =∛(8*0,000000001) = 2 * 0,001 = 0,002

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