#1421 · Algebra · Polynomials

Cubic expansion of a quadratic trinomial

Find the expansion of $(3 x^{2} - 2 a x + 3 a^{2})^{3}$ .

~15 minAnswer checked instantlyBinomial TheoremPolynomials

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. XIII. Binomial Theorem: Positive Integral Index, Examples XIII.b, No. 11

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