Simplifying the Root of Positive and Negative Numbers a Brief Rundown, Cube Root(27)

What is the cube root of 27?

• 2

• 3

• 4

• 5

Which of the following represents the square root of 9?

• 4

• 1

• 2

• 3

Why can't we take the square root of a negative number using real numbers?

• Because no real number squared gives a negative result

• Because negative numbers are not real

• Because negative numbers are imaginary

• Because square roots only apply to positive numbers

What is the imaginary unit 'i' used for?

• To represent the square root of positive numbers

• To represent the square root of zero

• To represent the square root of negative numbers

• To represent the cube root of negative numbers

How can the square root of -1 be expressed?

• As -1

• As 0

• As i

• As 1