Subject: Mathematics
Book: Maths Mastery
The Binomial Theorem expands expressions of the form (a + b)^n into a sum of terms involving binomial coefficients: (a + b)^n = Σ [C(n, k) × a^(n–k) × b^k], from k=0 to n. For example, (x + 2)^3 = x^3 + 3x^2(2) + 3x(2^2) + 2^3 = x^3 + 6x^2 + 12x + 8. This powerful tool streamlines expansions for higher-degree polynomials, used in probability distributions (like the binomial distribution), symbolic manipulation, and advanced algebraic problem-solving. Familiarity with binomial coefficients—C(n, k)—further connects to combinations, bridging algebra and combinatorics elegantly.
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