Radicals square and cubed roots

 $\sqrt{4}$  =

What do we call the number inside of the radical?

• index

• radicand

• square root

• radical

What is an index?

• The answer to the problem.

• The number inside the radical.

• The number outside of the radical.

• The square root of a number.

What is the cubed root of 8?

What is the square root of 25?

Why do we use a + and - sign when the index is even?

• To make math more confusing.

• Because our teacher told us to

• You only use them when the index is odd.

• When you multiply 2 positives or 2 negatives you end up with a positive number.

 $\sqrt{ }$  What is this sign called?

 $\sqrt{144}$  

What is the cubed root of 1000?

 $\sqrt{64}$