Square Roots and Imaginary Numbers

√-9 is...

• 81

• -81

• 23

• not possible

• 1

• -1

• ±1

• none

What does this simplify to?

• -12

• -11

• -10

• undefined

What is the square root of -1?

• 1

• i

• -1

• 0

Simplify √-23

• -√23

• 23i

• 23

• i√23