Learn how the take the cube root of a negative number using prime factors, cube root(-8)

The video tutorial explains how to find the cube root of -8. It begins with an introduction to the problem, followed by an explanation of the cube root concept. The instructor then provides a step-by-step solution, demonstrating that the cube root of -8 is -2, as -2 multiplied by itself three times equals -8. The tutorial concludes with a recap of the solution.

What is the cube root of -8?

• 4

• -2

• 2

• -4

Which number, when multiplied by itself three times, gives -8?

• -2

• 2

• -3

• 3

Why is -2 the cube root of -8?

• Because -2 multiplied by itself twice gives -8

• Because -2 multiplied by itself three times gives 8

• Because -2 multiplied by itself twice gives 8

• Because -2 multiplied by itself three times gives -8

What is the result of -2 times -2 times -2?

• -4

• 8

• -8

• 4

Which of the following is true about cube roots?

• Cube root of a positive number is always positive

• Cube root of a negative number is always positive

• Cube root of a positive number is always negative

• Cube root of a negative number is always negative