China | Math Olympiad | A Nice Algebra Problem

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[@charlesgordon8014]

Well, that's how they did it in the 19'th century before we had calculators, but now we do. I'm not sure what the point of this video is. Putting up something like this when there is a clever trick you can use to solve it is one thing, but I'm not convinced that your method is really any easier than working out 3^13 manually. What was the point of this?

[@user-qf9ie2td3j]

А у чём проблема посчитать 3¹³? Это даже в уме можно сделать

[@davidbrisbane7206]

3¹³ - 4 = 3¹(3⁴)³ - 4 =
3(81)³ - 4 =
243(81)² - 4 =
243(5661) - 4 = 1,594,323 - 4 =
1,594,319 (this way is quicker)

[@doichecabano]

Шляпа какая-то.

[@nucki222]

Quatsch hoch 3 mal 5

[@AbbasGuclu-jn3po]

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