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May
30
comment My son's Sum of Some is beautiful! But what is the proof or explanation?
A similar one that I noticed when I was in 5th grade is $1000*2^n + 10*2^{n+1}+2^{n+2}=2^{n+10}$
Jan
30
awarded  Supporter
Nov
7
awarded  Teacher
Nov
7
answered solve equation of form $x = a - (b - x)^c$