# How do you use the Binomial Theorem to expand #(2x−1)^4#?

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Apr 27, 2018

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Given:

We can say that:

However we are not quite done, we need the coefficients in front of each term, I would use combinations unless you really want to use Pascal's triangle, which you can since this a small exponent.

Using pascal's triangle:

For row 4: the coefficients are

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