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03-04-2018
Mathematics

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Please help! The coefficients in the expansion of (x+y)^4 are ___

Please help The coefficients in the expansion of xy4 are class=

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CastleRook CastleRook

12-04-2018

Expansion of (x+y)^4 will give us:
(x+y)^2(x+y)^2
=(x^2+2xy+y^2)(x^2+2xy^2+y^2)
=x^4+4x^3y+6x^2y^2+4xy^3+y^4
The coefficients are:
(1,4,6,4,1,)
Answer: D] (1,4,6,4,1,)

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