Question

Classify the real number: $\sqrt[3]{-216}$

Answer 1

Given number: $\sqrt[3]{-216}$.

Now,

$\sqrt[3]{-216}=\sqrt[3]{{\left(-6\right)}^3}$

$=-6$ ( cancel cube with cube root )

Since, $-6$ is a rational number.

Hence, $\sqrt[3]{-216}$ is a rational number.