#1530 · Algebra · Linear equations

Sum of Coefficients in Trinomial Expansion

In the expansion of $(a + b + c)^{8}$ , find the sum of the coefficients of the terms.

~5 minAnswer checked instantlySum of CoefficientsMultinomial Theorem

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. XIV. Binomial Theorem: Any Index, Examples XIV.c, No. 16 (part 2)

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