Binomial expansion ((a+b)^n = Σ nCr a^{n−r} b^r for non-negative integer n.)
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(a+b)^n = Σ nCr a^{n−r} b^r for non-negative integer n.
What each symbol means
| Symbol | What it stands for |
|---|---|
| n | Non-negative integer |
| a,b | Commuting symbols |
When to use this
Standard binomial theorem; n ∈ ℕ.