I'm looking out for maths tricks, specializing in "Square of a number" Like how to find square of numbers after 30 within seconds. There must be some tricks. Because the multiplying takes time, and it's hectic, and yep, without using calculators! Squares of big numbers! like numbers after 30. Or any random number that appears.

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There's a TED talk about a guy that can do this really fast.

TED stands for?

So there ain't no tricks?

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