When we find the cube of an algebraic term, we simply multiply it by itself and then by itself again.

Thus the cube of 2a⁴ is  

2a⁴ x 2a⁴ x 2a⁴ = 8a¹²

The reverse of cubing is finding the cube root.

So  ³√8a¹² = 2a⁴

This means that we find the cube root of the number and divide the index by 3.

Let's try some questions.