Question 282226
(2t+1)^1/4 -1=2 ?

(2t+1)^1/4 = 2 + 1 
(2t+1)^1/4 = 3

Raise both sides to the 4th power:

((2t+1)^1/4)^4 = 3^4
(2t+1)^1 = 81
2t+1 = 81
2t = 80
t = 40