As we have seen, the power of the form, where a, is called Newton's binomial. Also, when n = 0 we have when n = 1 we have when n = 2 we have when n = 3 we have when n = 4 we have Note that the coefficients of the developments were the Pascal triangle. Then we can also write: In general, when the exponent is n, we can write Newton's binomial development formula: Note that the exponents of a decrease from unit to unit, ranging from n to 0, and the exponents of b increase from unit to unit, ranging from 0 to n.