Mathematics
Senior High
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赤線の部分の計算を教えて欲しいです

s= } \(} }) + (} − 1)+(-1)+ 3 5 8 1 1-ms + 4 + ( 3 n² - 1 - 3 — — 2 3n-1-3n+2) +1= 1/1 1 mo 32 3n+2 12 n E+S 2(3n+2) (3-5 +20) "S -8= -5n+1

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✨ Best Answer ✨

こんな感じでしょうか❓

コウ

わかりました!
ありがとうございます!

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