Method for square roots and division?

[bjoern.gumboldt (Бьёрн Гумбольдт (龔博宇))]

Duplex method for square roots

In a previous thread I talked about the duplex method for squaring numbers. Read that first if you have no idea how this method works. Otherwise; you might not understand this thread. If you can square numbers using duplex numbers, then taking the square root is just working backwards, which we will do here. Let’s go forward first and then backward. This will make the calculation clear. 857^2 = 64 | 80 | 137 | 70 | 49 = taking care of carrying: 72 | 13 | 14 | 4 | 9 = another round: 73 …

…or use the search function on the forum…

https://forum.artofmemory.com/search?q=square%20root