Confused as to what’s going on here with simplification/rationalization of:

∜(256

∜(Fraction Bar) NOTE: ∜( Is over the whole fraction

∜(9x^6

whereas it goes to:

∜(9x^2

∜(Fraction Bar)

∜(x ∜(3^2 * x^2 * 3^2 * x^2 (Random x in front of bottom part?)

and Finally =

4∜(9x^2

∜(Fraction Bar)

3x^2

I understand that ∜256= 4 and then the bottom is multiplied by the bottom to cancel the 4th root which is ∜(3^2 * x^2 * 3^2 * x^2) then simplifies to ∜(81x^4 ) more simplified to 3x * x = 3x^2 (from the x in front). MY confusion IS WHERE does that other x in front come from? AND WHY does:

∜(16

∜(Fraction Bar)

∜(9x^2 equal the same thing? Again I get that ∜16=2 And 9x^2=3^2 * x^2 -(separated) then multiplied to cancel the 4th root.

Finally =

2∜(9x^2

∜(Fraction Bar)

3x

I just need to see the full expanded simplification of 9x^6 vs 9x^2. Is it 6-4 to get 3x^2? and where does that other x in front come from? I’m so confused…at least I understand all the other steps except for one.