Understanding Square Roots of Negative Numbers

Why is the square root of -16 not equal to 4 or -4?

• Because 4 squared is -16

• Because -4 squared is -16

• Because -4 squared is 16, not -16

• Because 4 squared is 16, not -16

What is the square root of -1 represented by in imaginary numbers?

• K

• I

• L

• J

How can the square root of -16 be expressed using imaginary numbers?

• -16i

• -4i

• 16i

• 4i

What is the square root of 16?

• 4

• 2

• 16

• 8

What is the next problem given for practice in the video?

• Square root of -25

• Square root of -36

• Square root of -49

• Square root of -64