12.6 Binomial Theorem
Pascal's Triangle
Apply: If you had septuplets, how many possible groups of boys and girls have at least 3 boys ?
Ex 1
Use Pascal's Triangle to expand each binomial
a) (x+y)8
b) (x-5y)7
Ex 2
How many of the possible groups of septuplets had at least 3 boys?
Ex 3 Use the binomial theorem to expand
(4x +2y)5
Ex 4 Find the fourth term of (2x-3y)6