- Thread starter
- #1

- Thread starter JoeC
- Start date

- Thread starter
- #1

- Admin
- #2

- Jan 26, 2012

- 4,191

What have you tried? Where are you stuck?I am looking for help solving for x for the question below. Any help would be greatly appreciated.

2^x=16(8^2x)

- Thread starter
- #3

- Admin
- #4

- Mar 5, 2012

- 8,774

I am looking for help solving for x for the question below. Any help would be greatly appreciated.

2^x=16(8^2x)

Welcome to MHB, JoeC!I don't really know where to start with this.

- - - Updated - - -

the answer to the question is -4/5 but I haven't been able to get it using log or ln.

You have

$$2^x=16(8^{2x})$$

(Or at least that is what I assume you have.)

Since we have $2^x$, let's try to make the other power also a power of $2$.

We have that $8=2^3$.

Do you know what $(2^3)^{2x}$ is?