Binomial Expansion Calculator

This tool applies the binomial theorem to an expression of the form (a x + b) raised to a whole number power. Give a, b and the power, and it returns the full expansion in descending powers along with the row of Pascal's triangle it came from and the arithmetic behind every coefficient. A second tab returns a single term on its own, which is what most homework questions actually ask for. It works on numbers you type into boxes rather than on typed algebra, so a trinomial or a fractional power is outside what it can do.