SOLUTION: solve for x: (1/3)^4x-1=3^x-1 i know you have to get them to the same base so i multiplied 1/3 by 9. but it isnt working. the answer choices include: 1. 2/5 2. 5/2 3. -2

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Question 296412: solve for x: (1/3)^4x-1=3^x-1

i know you have to get them to the same base so i multiplied 1/3 by 9. but it isnt working.
the answer choices include:
1. 2/5
2. 5/2
3. -2/5
4. 3/2

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
solve for x: (1/3)^4x-1=3^x-1
-------------------
(1/3)^4x = 3^x
3^(-4x) = 3^x
-4x = x
x = 0

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