A Level

MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series

Problem

Evaluate ∑k=18(5⋅2k−1+4k−3)\displaystyle \sum_{k=1}^{8}\bigl(5\cdot 2^{k-1}+4k-3\bigr). (a) 14431443 (b) 13951395 (c) 15071507 (d) 14191419

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