Mathematics
Senior High
Resolved

急ぎです💦

2ⁿ⁺³-2²の右の-2²を左に待ってって
2ⁿ⁺¹に出来ない理由を教えて下さい

(4) 22+23+2+2 これは初項2:4,公比2,項数n+lg 等比数列の和であるから、 4(2n+1−1)=4(27+1−1) 2² (2)-1)=22*¹1-2² √2413-4 2-1

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