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# What is the coefficient of x^3 in the expansion of (x+2*sqrt3)^7?

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What is the coefficient of x^3 in the expansion of (x+2*sqrt3)^7?

Jul 16, 2021

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$$(x+2\sqrt3)^7\\~\\ 7C3*(2\sqrt3)^4(x)^3$$

That is the  x^3 tern.  You can take it from there.

Jul 16, 2021