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Find the coefficient of x3 in the expansion of (1+1/2x)(1 + 2x)8
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Find the coefficient of x3 in the expansion of (1+1/2x)(1 + 2x)8

User Shanika
by
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1 Answer

5 votes

Answer:

8x^2 + 20x + 8

Explanation:

(8 + 4x) x (1 + 2x)

8 + 16x + 4x + 8x^2

8 + 20x + 8x^2

User David Arcos
by
5.7k points
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