Mathematics
Senior High

計算過程教えてください。
下のが答えです

m Q2m -2P2n-1 I Cor -2 Cap-l 立(Car-2GK-1 ) ド=) ど(2K2)-2(24-).2 2k -! 2ドー2 M Z24 222k-1 にオ (1

Answers

kを小さくできないので、nで回答しますね
2n×2²ⁿ⁻¹-2(2n-1)×2²ⁿ⁻²
=2n×2²ⁿ⁻¹-(2n-1)×2²ⁿ⁻¹
=2²ⁿ⁻¹×(2n-2n+1)
=2²ⁿ⁻¹

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