4root 8 July 8, 2019 16 32 64 128 4 root 81 4 root 8 4 root 8 simplified 4 root 80 4 root 81^-2 4 root 81 simplified 4 root 81 raised to minus 2 4 root 81 8 4 root 81 x 10 8 Square root of 81/4 3/4 root 8 4 root 81 power 4 root 84 4 root 81 power 2 4 root 81 3