Posted by **I REALLY NEED HELP, D:** on Thursday, February 2, 2012 at 10:35pm.

Simplify the expression. Write your answer using only positive exponents.

Explain as well.

1. (8x)^3*8^-4

2. 2x^-5*y^-3

3. (4x^4y^-3)^-2

4. 1/(3x)^-2

- Math -
**drwls**, Friday, February 3, 2012 at 1:45am
1. (8x)^3*8^-4 = 8^3*x^3/8^4 = x^3/8

4. 1/(3x)^-2 = (3x)^2 = 9x^2

Now you try the others. Get rid of negative exponents by moving those terms from numerator to denominator, or vice versa.

- Math -
**drwls**, Friday, February 3, 2012 at 2:11am
I see that Reiny already answered all the questions for you, when you posted earlier.

## Answer This Question

## Related Questions

- I really need help! (Math) - Simplify the expression. Write your answer using ...
- I NEED HELP (ALGEBRA) - Simplify the expression. Write your answer using only ...
- Math(Please help) - Simplify each expression. Assume all variables are positive...
- algebra - ***show work evaluate the expression: 7^-6 (-6)^-9 simplify the ...
- College Algebra - I have a few more questions that I'm not understanding. Its ...
- Pre-Algebra - Simplify the expression. Write the result using positive exponents...
- math - Use the properties of exponents to rewrite each expression so that it ...
- Math(Please help) - 1) An expression that occurs in calculus in given. Reduce ...
- Math(Please help) - 1) An expression that occurs in calculus in given. Reduce ...
- Math - How do you simplify a expression with positive exponents? How do you ...

More Related Questions