Chapter 12.1, Problem 12P

Find each product.

$-5\left[\begin{array}{l}-13\\ 2-2\end{array}\right]$

To determine

Find the product.

Answer to Problem 12P

  $\left[\begin{array}{l}\text{ 5 -15}\\ \text{-10 10}\end{array}\right]$

Explanation of Solution

Given:

  $-5\left[\begin{array}{l}\text{-1 3}\\ \text{2 -2}\end{array}\right]$

Formula Used:

  $x\left[\begin{array}{l}\text{a b}\\ \text{d e }\end{array}\right]=\left[\begin{array}{l}\text{xa xb}\\ \text{xd xe }\end{array}\right]$

Calculation:

  $-5\left[\begin{array}{l}\text{-1 3}\\ \text{2 -2}\end{array}\right]=\left[\begin{array}{l}-5\cdot (-1)\text{ -5}\cdot \text{3}\\ -5\cdot 2\text{ -5}\cdot (-2)\end{array}\right]=\left[\begin{array}{l}\text{ 5 -15}\\ \text{-10 10}\end{array}\right]$