Use Pascal's Triangle to expand (3s+2)^5

Question

Use Pascal's Triangle to expand (3s+2)^5

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Answer 1

Jordan:

Pascal's triangle looks like the following

1

1 2 1

1 3 3 1

1 4 6 4 1

1 5 10 10 5 1

So (x+y)⁵ = x⁵ + 5*x⁴*y +10*x³*y² + 10*x²*y³ + 5*x*y⁴ + y⁵

Use x=3s and y=2 and simplify.