Definition of binomial theorem
: a theorem that specifies the expansion of a binomial of the form {latex}(x + y)^n = \sum\limits_{k = 0}^{n}{\frac{n!}{(n  k)!k!}}{x^{(n  k)}}{y^{k}}{/latex}
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MerriamWebster unabridged
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Time Traveler for binomial theorem
The first known use of binomial theorem was in 1704
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