- #1

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## Homework Statement

4^x + 6(4^-x) = 5

## Homework Equations

log??? since this is the unit we are doing, but i'm not sure if it applies.

## The Attempt at a Solution

I was thinking of changing 4^x to a variable like 'a', but 4^-x is not the same so I can't replace that with 'a' as well.

Then I though 4^-x = 1/4 ^x

So

4^x + 6[(1/4)^x] = 5

and I'm lost.

thanks :)