In order to find the answer, we must first simplify the expression. ∛(729) = 9 ∛(-1000) = -10 ∛(x)³ = x ∛(y)⁶ = y²
The expression subsequently becomes: 9 / -10xy²
From the key that is provided next to the puzzle, we see that this expression represents the letter "M". The phrase is figured out using the remaining letters.
