oblicz: (2 ½)²-³√1/27=



Odpowiedź :

Asker
(2 ½)²-³√1/27= (⁵/₂)² - ¹/₃ = ²⁵/₄ ₋ ¹/₃ = ⁷⁵/₁₂ - ⁴/₁₂ = ⁷¹/₁₂ = 5¹¹/₁₂
(2 ½)²-³√1/27= (5/2)²-⅓=25/4-⅓=75/12-4/12=71/12= 5 11/12
(2 1/2)²-³√1/27= (5/2)²-1/3=25/4-1/3=75/12-4/12=71/12= 5 11/12