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Find the coefficient of x3 in the expansion of (2x-1)
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25 votes
Find the coefficient of x3 in the expansion of (2x-1)

User Aguardientico
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2 Answers

9 votes

Answer:

The coefficient is 2...

User Crowned
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4.4k points
2 votes

The exponent for your binomial is missing.

You want the coefficient of x^3 for (2x - 1).

This cannot be done without providing the exponent for (2x - 1).

User Charis
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4.8k points
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