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At: geom speed lbound 1 1

1. q:
2. n:
3. i:
4. (qn+1)(qn+1+i-1)

(qn)+(qn)(qn+i)

By:
Assert (n+1+i-1 = n+i)
THEN
RWH (HypC 5) 4


Generated subgoal:

14. (qn+1)(qn+i)
5. n+1+i-1 = n+i
(qn)+(qn)(qn+i)


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addequalnatural_numbersubtract