We now can see how nice it is to use Pascal’s triangle when
expanding binomial expressions. Each row of the triangle matches the
coefficients of a binomial expansion of the form \(\left(x+y\right)^n\) where \(n\) is the number
of the row. We start counting at the top of Pascal's triangle where the first
number (number \(1\)) Is the row zero and the row containing two ones, is row \(1\).