Express in lowest terms. 27a-1 9a-6a +1 0 1 2 За-1 O 9a? +3a+1 За-1 NEXT QUESTION ASK FOR HELP

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
icon
Related questions
Topic Video
Question
10
### Simplifying Expressions: Lowest Terms

**Question:**
Express in lowest terms:

\[
\frac{27a^3 - 1}{9a^2 - 6a + 1}
\]

**Options:**

- ( ) 1
- ( ) \(\frac{1}{2}\)
- ( ) \(3a - 1\)
- ( ) \(\frac{9a^2 + 3a + 1}{3a - 1}\)

**Explanation:**
To simplify the given expression, we need to factorize both the numerator and the denominator. 

First, let's factorize the numerator \(27a^3 - 1\):
\[
27a^3 - 1 = (3a)^3 - 1^3
\]

We recognize this as a difference of cubes, which can be factored using the formula:
\[
a^3 - b^3 = (a - b)(a^2 + ab + b^2)
\]

Applying this to our expression:
\[
27a^3 - 1 = (3a - 1)(9a^2 + 3a + 1)
\]

Next, we factorize the denominator \(9a^2 - 6a + 1\):
The denominator is already in its simplest form and can be factored as:
\[
9a^2 - 6a + 1 = (3a - 1)^2
\]

Now, substituting the factored forms back into the fraction, we get:
\[
\frac{(3a - 1)(9a^2 + 3a + 1)}{(3a - 1)^2}
\]

We can cancel out the common factor \((3a - 1)\):
\[
\frac{9a^2 + 3a + 1}{3a - 1}
\]

Thus, the expression in its lowest terms is:
\[
\boxed{\frac{9a^2 + 3a + 1}{3a - 1}}
\]

**Graphical Representation:**
This question requires simplifying a polynomial fraction to its lowest term. There are no graphs or diagrams involved in the solution of this particular problem.

**Navigation:**
- [Next Question]
- [Ask for Help]

**Copyright:**
© 2007, 2009,
Transcribed Image Text:### Simplifying Expressions: Lowest Terms **Question:** Express in lowest terms: \[ \frac{27a^3 - 1}{9a^2 - 6a + 1} \] **Options:** - ( ) 1 - ( ) \(\frac{1}{2}\) - ( ) \(3a - 1\) - ( ) \(\frac{9a^2 + 3a + 1}{3a - 1}\) **Explanation:** To simplify the given expression, we need to factorize both the numerator and the denominator. First, let's factorize the numerator \(27a^3 - 1\): \[ 27a^3 - 1 = (3a)^3 - 1^3 \] We recognize this as a difference of cubes, which can be factored using the formula: \[ a^3 - b^3 = (a - b)(a^2 + ab + b^2) \] Applying this to our expression: \[ 27a^3 - 1 = (3a - 1)(9a^2 + 3a + 1) \] Next, we factorize the denominator \(9a^2 - 6a + 1\): The denominator is already in its simplest form and can be factored as: \[ 9a^2 - 6a + 1 = (3a - 1)^2 \] Now, substituting the factored forms back into the fraction, we get: \[ \frac{(3a - 1)(9a^2 + 3a + 1)}{(3a - 1)^2} \] We can cancel out the common factor \((3a - 1)\): \[ \frac{9a^2 + 3a + 1}{3a - 1} \] Thus, the expression in its lowest terms is: \[ \boxed{\frac{9a^2 + 3a + 1}{3a - 1}} \] **Graphical Representation:** This question requires simplifying a polynomial fraction to its lowest term. There are no graphs or diagrams involved in the solution of this particular problem. **Navigation:** - [Next Question] - [Ask for Help] **Copyright:** © 2007, 2009,
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Knowledge Booster
Discrete Probability Distributions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
Algebra
ISBN:
9780134463216
Author:
Robert F. Blitzer
Publisher:
PEARSON
Contemporary Abstract Algebra
Contemporary Abstract Algebra
Algebra
ISBN:
9781305657960
Author:
Joseph Gallian
Publisher:
Cengage Learning
Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
Algebra
ISBN:
9781285463247
Author:
David Poole
Publisher:
Cengage Learning
Algebra And Trigonometry (11th Edition)
Algebra And Trigonometry (11th Edition)
Algebra
ISBN:
9780135163078
Author:
Michael Sullivan
Publisher:
PEARSON
Introduction to Linear Algebra, Fifth Edition
Introduction to Linear Algebra, Fifth Edition
Algebra
ISBN:
9780980232776
Author:
Gilbert Strang
Publisher:
Wellesley-Cambridge Press
College Algebra (Collegiate Math)
College Algebra (Collegiate Math)
Algebra
ISBN:
9780077836344
Author:
Julie Miller, Donna Gerken
Publisher:
McGraw-Hill Education