Mathmatical Studies - Unit 2 > Binomial Theorem
 
 

Pascal's Triangle

This is a triangular number pattern which can be used to help expand binomials. Look at the diagram below.

Can you predict the next 2 lines of the pattern?

(1 + x)0

1

=1

(1 + x)1

1    1

=1+x

(1 + x)2

1    2    1 

=1+2x+x2

(1 + x)3

1    3    3    1

=1+3x+3x2+x3

(1 + x)4

1    4    6    4    1

=1+4x+6x2+4x3+x4

(1 + x)5

1    5    10    10    5    1

=1+5x+10x2+10x3+5x4+x5

(1 + x)6

 

(1 + x)7