#1422 · Algebra · Polynomials

Term from the end of a binomial expansion

Find the $r^{e x t t h}$ term from the end in $(x + a)^{n}$ .

~10 minAnswer checked instantlyBinomial TheoremGeneral term

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. XIII. Binomial Theorem: Positive Integral Index, Examples XIII.b, No. 12

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Checked against the answer in H. S. Hall & S. R. Knight, Higher Algebra (1891).