(128y^2)^1/5 + (64 y)^1/5 = 24;
(2^5*2^2*y^2)^1/5 + ( 2^5*2^1*y)^1/5) = 24;
2*((2y)^1/5)^2 + 2* (2y)^1/5 = 24;
(2y)^1/5 = t;
t^2 + 2 t = 24;
t^2 + t - 12 = 0;
D = 1 + 48 = 49 = 7^2;
t1 = 3;⇒ (2y)^1/5 = 3;
2y = 3^5;
2y = 243;
y = 121,5.
t2 = - 4; ⇒(2y)^1/5 = -4;
2y = (-4)^5;
2y = - 1024;
y = - 512