The first four terms of the expansion of (x+y)^100 are...

kimmy_koo51

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The first four terms of the expansion of (x+y)^100 are

x^100 + 100 x^99 + 4950 x^98y^2 + 161 700 x^97 y^3

a. Write the first four coefficients in the row n= 100 of Pascal's Triangle
b. Write the last four coefficients in the row n=100 of Pascal's Triangle
c. Write the last four terms in the expansion of (x+y)^100
 
Look at Pascal's Triangle. Note the pattern of the numbers in the rows. Apply the pattern to this row.

Eliz.
 
Use the combinations from Pascal.

C(100,98)=4950

C(100,97)=161700

etc, etc,
 
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