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Elementary Algebra

Lynn Marecek, MaryAnne Anthony-Smith

$Math Studyset 91影视 Explanations$ Math

2nd Edition 路 1240 pages

ISBN: 9780998625713

Chapter 6: Q 232. (page 727)

In the following exercises, multiply
$9 r^{3} (r^{2} - 3 r + 5)$

Short Answer

Expert verified

The required answer is $9 r^{5} - 27 r^{4} + 45 r^{3}$ .

Step by step solution

01

Step 1. Given information.

The given expression is:

$9 r^{3} (r^{2} - 3 r + 5)$

We have to multiply the given expression.

02

Step 2. Use the distributive property to multiply.

$9 r^{3} (r^{2} - 3 r + 5)$

Now distribute,

$= 9 r^{3} 路 r^{2} - 9 r^{3} 路 3 r + 9 r^{3} 路 5$

Simplify,

$= 9 r^{5} - 27 r^{4} + 45 r^{3}$

Therefore, the value of the given expression is $9 r^{5} - 27 r^{4} + 45 r^{3}$ .

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Most popular questions from this chapter

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