Since 98 =2 x 7^2, it therefore follows that if we multiply 98 x [2^3 x 7^2] =98 x 392 =
[98 x 392]^1/4 =[ 2^4 x 7^4]^1/4 =2 x 7 = 14.
What do you mean 38,416^(1/4) is NOT 14?. Enter 38,416 in a calculator and take its square root TWICE, you should get 14.