Answered

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find the sum of the first 40 terms of the series -1+1+5+13+....​

Sagot :

Turky69420idn

Answer:

2^41-122

Step-by-step explanation:

-120 in total as each term is 3 less than a power of 2

Starts at power of 1 will end on 40

adding consecutive powers will give 2 less than the next power

2^(40+1)-120-2

2^41-122

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