Posted by A Girl. on Thursday, February 2, 2012 at 10:17pm.
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 really need help! (Math)  Reiny, Thursday, February 2, 2012 at 10:36pm
1.
8^3 x^3/8^4
= x^3/8
2. 2/x^5 * 1/y^3
= 2/(x^5 y^3)
3. 1/(4x^4 y^3)^2
= 1/(16x^8 y^6)
= y^6 /(16x^8)
4. 1/(3x)^2
= (3x)^2
= 9x^2

I really need help! (Math)  A Girl., Thursday, February 2, 2012 at 10:39pm
I don't understand how you got that for #1.

I really need help! (Math)  Damon, Friday, February 3, 2012 at 6:34am
1. Notation confusion maybe
(8^3 x^3) / 8^4
= (1/8) x^3
Answer This Question
Related Questions
 I NEED HELP (ALGEBRA)  Simplify the expression. Write your answer using only ...
 Math  Simplify the expression. Write your answer using only positive exponents...
 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 need some help with a few problems. They are multiple choice...
 College Algebra  I have a few more questions that I'm not understanding. Its ...
 PreAlgebra  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 ...
More Related Questions