Concept explainers
(a)
To solve the equation by graph.
(a)
Answer to Problem 69E
Graph
Explanation of Solution
Given information:
Formula Used:Graphing Utility
Calculation:
• Graph of
• Graph of
(b)
To solve the equation by algebraically.
(b)
Answer to Problem 69E
No solution because D is negative.
Explanation of Solution
Given information:
Formula Used:Quadratic Formula
Calculation:
Now, squaring both sides
So,
Now,
By quadratic formula
Now,
So,
Hence,
No solution because D is negative.
(c)
To which method prefer.
(c)
Answer to Problem 69E
Quadratic Formula
Explanation of Solution
Given information:
Formula Used:Comparison
Calculation:
Prefer quadratic formula because it is much easier that other method.
Chapter 10 Solutions
BIG IDEAS MATH Algebra 1: Common Core Student Edition 2015
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education