Binomial expansion

Binomial expansion is a way of expanding an expression in the form (a+b)^n into a sum of terms, e.g. (a+b)^2 = a^2 + 2ab + b^2.

Instead of us having to multiply out large sets of brackets, we can just use a few formulas or buttons on the calculator to find the expansion.

• binomial combination
• binomial theorem
• common binomial expansions