Elementary Algebra

17th Edition

ISBN:9780998625713

Author:Lynn Marecek, MaryAnne Anthony-Smith

Publisher:Lynn Marecek, MaryAnne Anthony-Smith

Chapter1: Foundations

Section1.2: Use The Language Of Algebra

Problem 1.46TI: Identify the terms in the expression 5x+2y .

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Question

Please help me with this question on matrices.

Expert Solution

Step 1

We first find ** A^{2}**, for which we multiply

**with itself. We perform matrix multiplication in which we multiply rows of first matrix with columns of second matrix element by element and add.**

*A*Step 2

Let us now find **3 A**, for which multiply each element of

**by 3.**

*A*Step 3

Now, to find **2 I** we consider the identity matrix of order

**3x3**and multiply its each element by 2. We take order

**3x3**to match with the order of

**and**

*A*^{2}**3**.

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