algebra
posted by reuben on .
^5 squareroot of x^20
*my answer x^4
^3 squareroot of 729/343
my answer: couldn't figure it out
use rational exponents to write ^3 squareroot of x * ^5 squareroot of 4x
my answer: ^15 squareroot 4x^8

^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
:)