book Maths Puzzle Numerical Ability

I need to simplify this and cannot remember how. I must show work! Thank you for your wonderful help!

3^-2

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book Other Question

y=e^10^2x
x=?
I would appreciate the kindness of your vauled help.

I have many to do!!!

Solve and show work!

(2y + 6) (y - 3) = 0