HELP ME PLEASE!! IM BEGGING YOU!!

Answer:
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Step-by-step explanation:
9 is 3 squared so 9 to power x-8 can be written as 3 to power 2(x-8)
Since bases are same powers are equal so
2(x-8) = 4x-12
2x -16 =4x-12
-4 =2x
x = -2