Question

Select the correct answer.Which expression is equivalent to? image attached

Answer 1

In this case, we'll have to carry out several steps to find the solution.

Step 01:

Data:

$21\sqrt[3]{15}-9\sqrt[3]{15}$

Step 02:

radical functions:

$21\sqrt[3]{15}-9\sqrt[3]{15}=12\sqrt[3]{15}$

The answer is:

$12\sqrt[3]{15}$