SOLUTION: Evaluate the summation of (2i-1)(2i+1) where i=1 and n=70

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Question 1123412: Evaluate the summation of (2i-1)(2i+1) where i=1 and n=70
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

something is wrong here, I do not see n in expression above