Question

pascal triangle patterns

Answer 1

example of pascal triangle pattern

Answer 2

It is used to create formulae

For example:

(a+b)^0=1----->see 1st row

(a+b)^1=a+b------>see 2nd row

(a+b)^2=a^2+2ab+b^2

(a+b)^3=a^3+3a^2b+3ab^2+b^3

Etc........