Answer:
-9
Explanation:
We can make (3^2)^4 into 9^4.
since the 4th power is always equal to the 4th power of its negation (that is, $a^4=(-a)^4), we know that (-9)^4 is equal to (3^2)^4 as well. So we know our answer is -9
hope this helps :)
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