Answer :

i guess it wiil be solved like this

${teks-lihat-gambar} Аноним
meerkat18
So based on your question that ask to express the sum of sigma notation of 1-3+9-27-81 and based on my calculation and the use of formula and laso the use of your given i came up with an answer of K=1 and i hope you are satisfied with my answer

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