1. Home
    2. ›
  2. Quiz
    3. ›
  3. Complex And Imaginary Numbers Quiz
Restart
8 of 10

Can you solve √-81? 

  • -9i
  • 99i
  • 9i
  • None of the above
That's Correct!
It's Wrong!

The square root of a negative number is an imaginary number. In this case, the square root of -81 is 9i, where i represents the imaginary unit.

Next

Your New Favorite Thing

what-sign-is-most-likely-to-be-attracted-to-you

What sign is most likely to be attracted to you?

divisibility-rules-practice-quiz

Divisibility Rules Practice Quiz

what-is-your-biggest-fear

Quiz: What is Your Biggest Fear? Get 100% Honest Answer

the-new-year-at-hogwarts-quiz

The New Year at Hogwarts Quiz

cell-organelles-and-their-functions-quiz

Cell Organelles And Their Functions Quiz

four-temperaments-test-whats-my-temperament

Four Temperaments Test: What’s My Temperament?

Key Data

Questions
10
Category
Math
Correct
0
Incorrect
0

Quizzes For Fun

taylor-swift

Taylor Swift

love

Love

personality

Personality

trivia

Trivia

letter-trivia

Letter Trivia

animal

Pets & Animals

tv-movie

TV & Movie

harry-potter

Harry Potter

celebrity

Celebrity

games

Games

math

Math

zodiac

Zodiac

fun

Fun

education

Education

cartoon

Cartoon

sports

Sports

bible

Bible

science

Science

nutrition

Nutrition

health

Health

festival

Festival