Cube Roots

What is a cube root?

• A value that, when multiplied by itself three times, gives the original number.

• A value that, when added to itself three times, gives the original number.

• A value that, when squared, gives the original number.

• A value that, when divided by itself three times, gives the original number.

Evaluate ∛1.

• 0

• 1

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• -1

Evaluate ∛729.

• 7

• 8

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• 10

What is the cube root of 0?

• 0

• 1

• -1

• undefined

How can you determine if a number is a perfect cube?

• A number is a perfect cube if its cube root is an integer.

• A number is a perfect cube if it is divisible by 2.

• A number is a perfect cube if it is greater than 10.

• A number is a perfect cube if it ends with the digit 5.

Evaluate ∛8.

• 1

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• 3

• 4

Evaluate ∛27.

• 1

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• 4

What is the cube root of a negative number?

• It is always positive.

• It is also negative.

• It is zero.

• It is undefined.

What is the relationship between cube roots and exponents?

• The cube root of a number x can be expressed as x^(1/2).

• The cube root of a number x can be expressed as x^(1/3).

• The cube root of a number x can be expressed as x^(2/3).

• The cube root of a number x can be expressed as x^(3/2).

Evaluate ∛64.

• 2

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• 5