Learn how to subtract two radical expressions with different radicands

The video tutorial explains the process of adding and subtracting radicals, emphasizing that radicans must be identical for these operations. It covers simplifying radicans using cube roots and prime factorization, and demonstrates subtracting simplified radicals with an example. The tutorial aims to clarify the rules and methods for handling radicals in mathematical expressions.

What must be true about radicands when adding or subtracting radicals?

• They must be prime numbers.

• They must be even numbers.

• They must be the same.

• They must be different.

Which operation allows radicals to have different radicands?

• Addition

• Subtraction

• None of the above

• Multiplication

What is the cube root of 27?

• 6

• 3

• 27

• 9

How is the number 54 rewritten to simplify its cube root?

• 54 * 1

• 9 * 6

• 27 * 2

• 18 * 3

If you have 3x cube root of 2 and subtract 2x cube root of 2, what is the result?

• 5x cube root of 2

• 0

• x cube root of 2

• 6x cube root of 2