A Nice Square Root Math Simplification | Math Olympiad | You should know this trick!

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[@wagnerperlino5048]

Well done !

[@xfarruxbeks]

Good

[@observadorlife]

If I do sqrt{(sqrt(2) - sqrt(3))^2}, is it correct with the result < 0 ?

[@crosswingrobots]

The expression you have there is fine, but the square root of the square will always return the positive answer.

[@DavidItodo-qh8tu]

I don't understand 1:38