# How do you simplify 2 cubed root 81 + 3 cubed root 24?

##### 2 Answers

The answer is

#### Explanation:

Look at the values whose cube roots are involved in the problem and determine whether they are perfect cubes or whether they contain factors which are perfect cubes (24 is 3 x 8, and 8 is a perfect cube, and 81 is 3 x 27; 27 is a perfect cube).

This allows you to simplify the problem as shown here:

This step is true because

I've put in some brackets in the hope of keeping this clear.