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posted by ios7 on Thursday, September 19, 2013 at 10:54pm.
How do you do. Please Explain Sum of X Sum of Squares Sum of X squared
sum of x is meaningless sum of squares. a^2 + b^2 3^2 + 4^2 x^2 + y^2 sum of x^2 is meaningless a sum need two addends.
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