Square Roots of a Complex Number (2 of 3: Principal square root)

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I'm a math teacher in California. I saw your TED talk and then looked you up on YouTube. Thank you for bringing so much energy to your math class. I enjoyed watching this video.

MatthewHamiltonYT
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These videos are such a key demonstration of how an engaging and enthusiastic teacher can absolutely make a class. I'm in my 30's, did all of this maths many years ago, but still enjoy these videos.

yerwol
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Square root of a number produces two different numbers of equal magnitude and opposite signs which when multiplied by itself gives the number of which square root was taken. You are awesome and lots of love from India😇👍👌🙋‍♂️

afrinahmed
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Guru g . A very good morning from India. U teach awesome...

viplovesinghnegi
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Hurry up and post part 3! I finished the question but want to know if I am correct! I got 4 solutions, but am not sure if any of them are extraneous?

osmiumviii
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God damn it feels like I'm back in math class again, I love these videos. Ever since I dropped out of school I've been really missing learning like this and boy is this just the perfect thing me. Love it! keep it up!

thecubist
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Another day where I learned so nice things. Love it

berkankucuklu
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Can you make video on ratio and proportion, logrithm, time and distance please sir love from India ❤️

Arunsharma-tfxp
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"We just have to be a little bit cautious" – best cliff hanger.

PauxloE
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Is that video recorded in a Chinese classroom?

petkoelenkin