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This thread is inspired by another: view original post
2/21/2014 4:27:18 PM
5
I have figured out a math formula!
It's for finding the power of a number to the second power.
For example, 12x12=144
to find 13x13 you just add 13 and 12 and add it to 12 to the 2nd power.
So 12x12=144
13+12=25
144+25=169
13x13=169
It works!
English
#Offtopic
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As Silent already pointed out, it works because the whole n^2+(n+1)+n can be separated into factors (n+1)^2. I had never noticed that before, pretty neat. Could be good for impressing people with squaring big numbers in your head.
