i love knots :3

poopy
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Ngl that's cool, but there's a secret number in math called i, and if you take a square of it, you will get a -1. Its not a simple number, i is what an imaginary number. To be clear: imagine a number line, if you multiply number 4 by -1, your number will rotate 180 degrees and you will get a -4. And now, imagine you have a new imaginary number line, and multiplying by i - is rotating by 90 degrees. And that's how you will take a square root out of negative number!
 
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