The numbers 1, 7, 21, 35, 35, 21, 7, 1 form a row of pascal's Triangle.

Which power of (a+b) does the row go with?
Write the next row?

3 answers

easy ....

since (a+b)^n = 1a^2 + na^(n-1) b + ....

so 1, 7, 35 ... must come from (a+b)^7
Signal name
I don't know lol
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