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[Daily puzzle] Easy square root
439 sats \ 10 comments \ @south_korea_ln 12 Nov 2024 science
A quick one today, to solve without a calculator, by smartly rewriting terms.
\sqrt{49^2 + 99}
No sats this time for just giving the final number ;)
Previous iteration: #762996 (detailed answer in #763219, by induction).
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434 sats \ 5 replies \ @cryotosensei 12 Nov 2024
I think a typical 8th or 9th grader in Singapore can solve this problem
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24 sats \ 2 replies \ @SimpleStacker 12 Nov 2024
Nice. As I said, I'm so jealous of Singapore's education system.
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0 sats \ 1 reply \ @cryotosensei 12 Nov 2024
Haha we try our best
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0 sats \ 0 replies \ @SimpleStacker 12 Nov 2024
I would like to learn what makes it work. Do you think it is primarily due to curriculum design, teacher talent, or cultural values towards education? Maybe all three, but if there's anything in the curriculum design that Americans can improve I'd love to hear about it.
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24 sats \ 1 reply \ @0xbitcoiner 12 Nov 2024
good job!
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11 sats \ 0 replies \ @cryotosensei 12 Nov 2024
Thank you!
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115 sats \ 0 replies \ @Satoshi__Nakamoto 12 Nov 2024
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42 sats \ 0 replies \ @Aardvark 12 Nov 2024
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0 sats \ 0 replies \ @south_korea_ln OP 13 Nov 2024
\sqrt{49^2 + 99} = \sqrt{49^2 + 49 + 50} = \sqrt{49(49+1)+50} = \sqrt{49(50) + 50} =  \sqrt{(49+1)50} =  \sqrt{50^2} = 50
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0 sats \ 0 replies \ @sangekrypto 12 Nov 2024
Looks like I have to study again to better master mathematics.
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