Answer:
your answer is 1305
Step-by-step explanation:
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In your question that first im confused but i arrange if correctly though, in my calculation the possible power of the series is infinity <span>∑ n-0 times the -1 one to the power of n over n+1 times x to the power of n+2</span>
The answer is

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<span>5z^2 + 6a
This is because there is an imaginary 1 in front of the second term that you have to remember to use when combining like terms. </span>