Posted by **jason** on Sunday, December 7, 2008 at 8:46pm.

solve for x:

x^(2/3)=(1/27)

(2^(x)+4)/(2^x)=2

explain please

- pre cal -
**Noether**, Sunday, December 7, 2008 at 8:53pm
For the first one, remember that (a^b)^c = a^(bc). 2/3 * 3/2 = 1, so raise each side to the power of 3/2. That's all you need to do; you'll be left with x=(something).

For the second, start by splitting the left side into two fractions, like so:

(2^x)/(2^x) + 4/(2^x) = 2.

(2^x)/(2^x) = 1, so we can subtract that from both sides:

4/(2^x) = 1.

Multiply by 2^x to get that to itself:

4 = 2^x.

And you should be able to finish it yourself.

## Answer this Question

## Related Questions

- Pre-Cal - What is the domain of f/g? f(x) = x / x+1 g(x) = x^3 Please explain! ...
- pre-cal - can anyone please explain to me how to simplify this exponential ...
- physics - A 50 gram ice cube is cooled to -10oC in the freezer. How many ...
- Science - A 50 gram ice cube is cooled to -10oC in the freezer. How many ...
- pre-cal - Solve. (sqrt. x + 1) - (sqrt. 2x -12) = 1 The answers I reached were x...
- Pre-Cal - Hi, can someone please solve this step-by-step for me? I really don't ...
- pre cal - solve for x 8x-(2x-1)=3x-10
- Pre Cal - Solve for x 2^x=8^x-3
- Pre Cal - what does it mean when it says describe the end behavior of f and ...
- Pre-Cal. - How does this go from x^2+ to 2i, explain.

More Related Questions