Binomial Theorem
Binomial theorem for positive integers.
The binomial theorem for positive integers can be expressed as
(x + y)^{n} = x^{n} + n x^{n1 }y + n ((n  1) / 2!) x^{n2} y^{2} + n ((n  1)(n  2) / 3!) x^{n3} y^{3} + .... + n x y^{n1} + y^{n} (1)
In mathematics the binomial theorem is important as an equation for expansion of powers of sums.
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