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posted by Roy Jr on Wednesday, December 14, 2011 at 10:24pm.

(x+y) to the 5th power

look at row 5 of Pascal's triangle 1 5 10 10 5 1 (x+y)^5 = x^5 + 5x^4 y + 10x^3 y^2 + 10x^2 y^3 + 5xy^4 + y^5

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