TMUA 2019 Paper 1 Q3 — Worked Solution

P1·Sequences & Series, Algebra & Surds·5.0Official · 2019 · Q3

binomial-coefficientarithmetic-seriescoefficient-of-x

Find the coefficient of

x

in the expression:

(1 + x)^{0} + (1 + x)^{1} + (1 + x)^{2} + (1 + x)^{3} + \dots + (1 + x)^{79} + (1 + x)^{80}

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