x^2/3 -9x^1/3 +8

Answer 1

x^2/3 -9x^1/3 +8 = 0 maybe?

let y = x^1/3

y^2 -9 y + 8 = 0
(y-8) (y-1) = 0
y = 8 or y - 1
x^1/3 = 8 so x = 8^3
x^1/3 = 1 so x = 1