Question

X^ -3 = 216

How do you find x?

Answer 1

1/x^3 = 216

third root(1)/third root(x^-3) = third root(216)

third root(1)/x = third root(216)

1/x = third root(216)

1/third root(216) = x

i think that is how you do it please check again or confirm with others.