Coefficient of x³y z² 15. What is the numerical coefficient of the term containing x³ y z² in the expansion (x-y + 2z-1)?? a. -1,680 b. -420 C. d. 1,680 420

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A: Introduction: The binomial expansion theorem is very useful in expanding a binomial terms with…

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A: We use the Binomial Theorem to answer the given question.

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A: According to our guidelines we can answer only one question and rest can be reposted.