Question 63552
<b>Use Pascal's Triangle to expand each binomial.
(x+y)^8</b>

Here's the first 9 rows of Pascal's triangle:

1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
1 8 28 56 70 56 28 8 1

The 9th row gives us the coefficients for {{{(x+y)^8}}}:

{{{x^8+8x^7y+28x^6y^2+56x^5y^3+70x^4y^4+56x^3y^5+28x^2y^6+8xy^7+y^8}}}