## Precalculus (6th Edition) Blitzer

Published by Pearson

# Chapter 8 - Section 8.5 - Determinants and Cramer's Rule - Exercise Set - Page 946: 58

#### Answer

See explanations.

#### Work Step by Step

When expanding a determinant by minors: Identify the row $i$ and column $j$ of the element from which the expansion take place; evaluate $i+j$, and if it is odd, supply a minus sign.

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