Lesson: Three-by-Three Determinants Prentice Hall • Algebra 2 • Common Core • Glencoe • Algebra 2 • Common Core • Glencoe • Precalculus • Common Core

Mathematics

In this lesson, we will learn how to evaluate 3x3 determinants using the cofactors (Laplace expansion) or the Sarrus method.

Video

15:14

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Q1:

Find the value of

Q2:

Consider the determinant Given that and , determine the determinant’s numerical value.

Q3:

Which of the following is equal to the determinant

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