∞ ∑ 2^n
n=0
This equals to 1+2+4+8+16+...
(2-1)(1+2+4+8+16+...)
(2+4+8+16+32+...)-(1+2+4+8+16+32+.. .)
Numbers cancel out and we are left with -1.
I am very confused...
:(
Did I make a mistake
I am confused.

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