
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
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September 20th, 2018, 05:42 AM  #11 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,608 Thanks: 954 
Clearer this way: square of 0 = 0 square of 1 = 1 [10=1] square of 2 = 4 [41=3] square of 3 = 9 [94=5] Formula for Sum of 1st n squares: S = n(n+1)(2n+1) / 6 

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