\nthroot3{8}^{x}=4

\nthroot4{8}^{x}=1

\nthroot5{2}^{x}=128

\nthroot5{8}^{x}=64

\nthroot4{0.25}^{x}=0.25

\nthroot3{32}^{x}=2

\nthroot4{32}^{x}=0.5

\nthroot3{2}^{x}=0.25

\nthroot5{2}^{x}=0.5

\nthroot5{2}^{x}=256

\nthroot5{32}^{x}=512

\nthroot4{0.5}^{x}=512

\nthroot3{16}^{x}=2

\nthroot5{16}^{x}=1024

\nthroot5{0.25}^{x}=1

\nthroot4{16}^{x}=64

\nthroot4{32}^{x}=128

\nthroot5{0.5}^{x}=4

\nthroot5{8}^{x}=0.5

\nthroot3{2}^{x}=128

\nthroot3{32}^{x}=4

\nthroot4{0.25}^{x}=1

\nthroot3{8}^{x}=8

\nthroot4{0.5}^{x}=128