# What is the square root of -2?

I need to prove my math teacher wrong

How to Add

by
FaqMan

DIY Circuit Component Tester/Checker

by
Yase3n

Film Canister Flashlight

by
Cats Science Club

mini fm transmitter

by
p mishra

Positive or negative II

by
Urnammu

How to Make an Agar Topography

by
skrrr

Finding the Net Force on a Beam in the Y-direction

by
brant2

Let your inbox help you discover our best projects, classes, and contests. Instructables will help you learn how to make anything!

active| newest | oldestP.S. sorry about the mini rant

In retrospect, it was a stupid thing to do, and I wish we'd learned more math.

If you really want to "be right", learn some more math, instead of parroting things you've picked up on internet forums. Sure as hell, if you tried it on with me in a maths class, I would ask you for a detailed explanation of your analysis.

Steve

You need to use complex or imaginary number sets to take a - SqrRt .

i.this is because there is no number which you can square to get a negative number, it will always be positive.i.-2 = -1 x 2

so (root) -2 = (root) (-1 x 2),

which is (root) 2

i(ibeing (root) -1L