Question

\(\dfrac{x^2}{54}=\dfrac{-4}{x}\)

Answer 1

\(\Leftrightarrow x^3=-4\cdot54=-216=\left(-6\right)^3\\ \Leftrightarrow x=-6\)

Answer 2

\(\Leftrightarrow x^3=-216\\ \Leftrightarrow x=-6\)

Answer 3

x³ = 54.(-4) = -216

x³ = (-6)³

Vậy x = -6