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Answer 1 · 2017-09-07T22:53:10

I think you mean simplified.

If written #y = X^(x^(x^4)# it can't be simplified. If it should mean

# y = (((x)^x)^x)^4#

Then:

#y =( (x)^x)^(4x)#

#y = (x)^(4x^2) => y = x^(4x^2)#

This exploits the laws of indices, which states:

#(a^m)^n = a^(mn)#