Mathematics
Senior High
Solved
ここまでやって計算がよくわからなくなりました。教えてください🙇♀️
35=
(2)S=5.1+9.3+13.3+…+(4n+1)-37-1
5.3+9.32+…+(4n-3)-371+(Antl
いい
-25=5+4(3+32+
+3h-1)-(4n+1).3n
5+43-1
3(3h-1-1)
-(4n+1)-3h
= 5 + 2-3 (3 n-1-1)-4n3" -3h
5+2(3-3)-4n3n-3h
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ありがとうございます!