Which polynomial can be factored using the binomial theorem?

The binomial theorem gives (a − b)^4 = a^4 − 4a^3b + 6a^2b^2 − 4ab^3 + b^4. Substituting a = 6x and b = 1 gives (6x − 1)^4 = 1,296x^4 − 864x^3 + 216x^2 − 24x + 1. Therefore, choice D is the polynomial that factors as a binomial raised to the fourth power.

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