Mathematics
Senior High
Resolved

矢印のところの変形教えてください🙇‍♀️

よって Sn= 1-(-5) (3) v = √2-1= √2 +1 よってS -—-{1 (√2-1){(√₂+1) "-1} (√2+1)-1 (√2+1)^-1-√2+1 √2 ABEMA

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