Birdwatch Note Rating
2023-08-30 08:16:11 UTC - HELPFUL
Rated by Participant: C170259F74E1AD521EA9962ABBE896FE0173F0D8B0E055BDFFC397C84CE7A03B
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Original Note:
This technique does not work for all square-roots or other root functions. The examples here are hand-picked to work. For example: SQRT(169) = 13 SQRT(196) =14. 1+6+9=16 for both, which fails the method presented. This link contains some tricks for larger square roots. https://www.cuemath.com/algebra/square-root-tricks/
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