SOLUTION: How do you solve this for x ? {{{ log ( 2 , 2x) }}} + {{{ log (2 , x) }}} = 5 I'm not really sure about how to even start off this problem but I feel like an e will be invol

Question 1032859: How do you solve this for x ?
+ = 5

I'm not really sure about how to even start off this problem but I feel like an e will be involved. Please please help, thank you so much. :)
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
You do not need e here.

Use the fact that

. So

.

Since

, we must have

. Assuming we only define log on the positive real numbers, the only solution is

(x = -4 introduces logs of negative numbers).
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