((c-1)/(c²/⁴+c¹/²))*((c¹/²+c¹/⁴)/(c¹/²+1))*(c¹/⁴+1)
Пусть c¹/⁴=t ⇒ c¹/²=t₂ c=t⁴
((t⁴-1)/t⁴)*((t²+t)/(t²+1))*(t+1)=((t⁴-1)/t⁴)*(t*(t+1)/(t²+1))*(t+1)=
(t²+1)(t²-1)*t*(t+1)*(t+1)/((t⁴*(t²+1))=(t²-1)(t+1)²/t³=(c¹/²-1)(c¹/⁴+1)²/c³/⁴=
=(c^(1/2)-1)(c^(1/4)+1)²/(c^(3/4).