Solution: What is the sum of the coefficients in the expansion (x + y – z)^8?

(Last Updated On: December 8, 2017)

Problem Statement: ECE Board April 1995

What is the sum of the coefficients in the expansion (x + y – z)^8?

• A. 0
• B. 1
• C. 2
• D. 3

Problem Answer:

The sum of the coefficients in the expansion is 1.

Solution:

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