Verified answer

(⁵√56)(t⁸) is the simplest form and you can't factor any further.

(⁵√56)(t⁸) = [56^(1/5)](t⁸)

assuming you mean (56*t^8)^(1/5) ... since the factoring sign does not have a top bar to show how much of the equation is to be "rooted"

factor to [ 2*2*2*7*t^5*t^3 ] ^ (1/5) aka find the fifth root of....

first, not enough ( i e 5 ) TWO's, but there are enough t's, so

t*[(56t^3)^(1/5)] ... with extra symbols for clarity; or say ... 56^(1/5) * t * t^(3/5)