I'll just start out by showing the equation.

I had a similar problem. I'll show how I worked that one out so that you can see my train of thought on this one.

Multiply both sides by

Now it's a quadratic. Solving for

I'll save both of us some time by not showing the quadratic equation steps.

So, I now have:

Now, I take the log of both sides:

So,

Now, back to the problem at hand.

I multiplied both sides of the original equation by to get:

I then multiplied both sides by to get:

I then bring everything to one side:

But, I can't see how this is quadratic. Either I screwed up before this point (the most likely scenario), or I'm just not seeing the quadratic.

Please help. Thanks.