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What is the coefficient of x^2 in the expansion of (x+2)^3

What is the coefficient of x^2 in the expansion of (x+2)^3
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5 votes
What is the coefficient of x^2 in the expansion of (x+2)^3

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User Jim Flood
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1 Answer

4 votes
(x+2)^3=x^3+2^3+3*x^2*2+3x*2^2=x^3+8+6x^2+12x

The coeficient of the x^2 is 6.
answered
User Anna Dunietz
by
8.7k points
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