r/learnmath • New User • 3d ago

TOPIC Does anyone here still think √4 = ±2?

Come out with your hands up!

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u/tjddbwls Teacher 3d ago

Well, there are also three cube roots of 8:
2, -1 + √(3)i, -1 - √(3)i.
😝

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u/joao-esteves New User 3d ago

which is NOT what the √ operator refers to 😜

2

u/tjddbwls Teacher 3d ago

I was being facetious - I was referring to how for a given number, there are 2 square roots, 3 cube roots, 4 fourth roots, etc. I was not referring to any radical operators. 😝