y = 2x to the power of 2

I am sorry, but you are not being very clear here. I assume you mean \(y = (2x)^2\), or \(y = 4x^2\). However, please specify what you are asking about.

Which equation can be simplified to find the inverse of y = 2x2?

and its just the power of 2 not 4

\(y=2x^2\) cannot be simplified.