Binomial Theorem Expansion Calculator


An easy to use calculator that calculates the coefficients in a binomial expansion of the form.

$$(a x + b y)^n = \sum_{k=0}^{n} {n\choose k} (a x)^{n-k} (a y)^k$$

Use Calculator to Expand Binomials

Enter coefficients $a$ and $b$ as integers, decimals or fractions of the form p/q as shown in the example below . Enter the exponent $n$ as a positive integer gretaer than 1 and press "Expand".


a = b = n =



More References and links

Binomial Coefficients Calculator
Maths Calculators and Solvers

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