You can put this solution on YOUR website! Multiply the things under the radical signs, then look for powers of 4 that can come out of the radical.
the fourth root of times the fourth root of
the fourth root of
the fourth root of
the fourth root of
the fourth root of
the fourth root of
the fourth root of
2ab^3 the fourth root of
If you really meant the fourth root of the square root of ... let me know and I'll edit this.
Happy Calculating!!!