Fast square 3 digit numbers
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5:49
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@MrViveksahi So easy! This is a method of Arthur Benjamin (19 March 1961 - ) who is the author of a book using this method I have! For 714^2, do 728 x 700 and add 14^2 = 196 for (72800 x 7) + (14 x 14) = 509600 + 196 = 509700 + 96 = 509796. :P
samneo2727 1 month ago
hardest method i have ever seen
MrViveksahi 3 months ago
it would actually be easier to just do a written mehod of it
e.g: 67^2= 67x67
[use written method]
kingofallguitarheros 5 months ago