How do you simplify root3(4)/root5(8)?

1 Answer
Apr 8, 2017

root(3)(4)/root(5)(8) = root(15)(2)

Explanation:

Since we are dealing with positive radicands, we can freely combine the exponents like this:

root(3)(4)/root(5)(8) = (2^2)^(1/3) / (2^3)^(1/5)

color(white)(root(3)(4)/root(5)(8)) = 2^(2/3) / 2^(3/5)

color(white)(root(3)(4)/root(5)(8)) = 2^(2/3-3/5)

color(white)(root(3)(4)/root(5)(8)) = 2^(10/15-9/15)

color(white)(root(3)(4)/root(5)(8)) = 2^(1/15)

color(white)(root(3)(4)/root(5)(8)) = root(15)(2)