What is the result of the 100th formula 1x2 + 2,2x3 + 8,3x4 + 14,4x5 + 20

The general term is n * (n + 1) + 6n-4
Substituting 100, we get 100 * 101 + 600-4 = 10696

How is 1 2 3 4 5 6 7 8 9 equal to 10

It's impossible. In the end, there are 10 left, that is to say, adding and subtracting offset 35. It's impossible to add and subtract 17.5, so it's impossible

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