Homework Help: I NEED HELP (ALGEBRA)

Posted by A Girl. on Thursday, February 2, 2012 at 10:03pm.

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

I NEED HELP (ALGEBRA) - Bosnian, Friday, February 3, 2012 at 4:49am
( 8 x ) ^ 3 * 8 ^ ( -4 ) =

8 ^ 3 * x ^ 3 / 8 ^ 4 =

8 ^ 3 * x ^ 3 / ( 8 ^ 3 * 8 ) =

[ ( 8 ^ 3 ) / ( 8 ^ 3 ) ] * ( x ^ 3 / 8 ) =

x ^ 3 / 8

2 x ^ ( - 5 ) * y ^ ( - 3 ) =

2 / ( x ^ 5 * y ^ 3 )

[ (4 x ^ 4 y ^ ( - 3) ] ^ ( - 2 ) =

[ ( 4 x ^ 4 / y ^ 3 ) ] ^ ( - 2 ) =

1 / ( 4 x ^ 4 / y ^ 3 ) ^ 2 =

1 / ( 16 x ^ 8 / y ^ 6 ) =

y ^ 6 / ( 16 x ^ 8 )

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

1 / [ 1 / ( 3 x ) ^ 2 ] =

1 / [ 1 / ( 9 x ^ 2 ) ] =

9 x ^ 2 / 1 =

9 x ^ 2

Answer this Question

Related Questions

Math - Simplify the expression. Write your answer using only positive exponents...
I really need help! (Math) - Simplify the expression. Write your answer using ...
Math(Please help) - Simplify each expression. Assume all variables are positive...
algebra - ***show work evaluate the expression: 7^-6 (-6)^-9 simplify the ...
Math- Completely confused! - Simplify each expression (where possible) and ...
Pre-Algebra - Simplify the expression. Write the result using positive exponents...
College Algebra - I have a few more questions that I'm not understanding. ...
Algebra- is my answer right - Simplify. (2b^-4 c^6)^5 I get b^20/32c^30 Is that ...
Math - How do you simplify a expression with positive exponents? How do you ...
algebra - need help again!!!!! Simplify the expression. Use only positive ...

For Further Reading

First Name:
School Subject:
Answer: