Particular cases of Binomial Theorem
(i) Replacing b by (−b), in the
binomial expansion of (a + b)n, n ∈ N, we get
Observe that the sign ‘+’ and ‘−’
appear alternately in the binomial expansion of (a − b)n.
(ii) Replacing a by 1 and b by x,
in the binomial expansion of (a + b)n, we get
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