1/x-^2*x^4

1/x^-2 * x^4 = x^2 * x^4 = x^6

Correct! The simplified version of the expression 1/x^-2 * x^4 is x^6. Great job!

I'm sorry, but there seems to be a typo in your expression. Can you please clarify the expression you are trying to simplify?