Homework Help: algebra

Posted by reuben on Saturday, March 1, 2008 at 8:12pm.

^5 squareroot of x^20
*my answer x^4

^3 squareroot of 729/343
my answer: couldnt figure it out

use rational exponents to write ^3 squareroot of x * ^5 squareroot of 4x
my answer: ^15 squareroot 4x^8

algebra - No name, Saturday, March 1, 2008 at 9:34pm
^3squareroot of 729/343

you can use your calculator to figure this out and you will get 9/7.

the last one, i will use a for x, and x for multiply

if i use exponent for this, i will have x^1/3.(4x)^1/5

then x^1/3.4^1/5.x^1/5
= x^8/15.4^1/5
=x^8/15.4^3/15
= ^15squareroot of 4^3.x^8

:)

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