change into

The square root of the third root sign (the 6th power of a) is |a|

Two: the n power of x =a+b, then the root sign of x = n (a+b).

Change to:

N is an odd number, and x = the root number of degree (a+b)

N is an even number, and X = the radical sign (a+b) of N.

Three: the 4th root sign [(-6) to the 4th power ]=-6.

Change to:

The 4th root sign [the 4th power of (-6) ]=6.