Concept explainers
To solve the equation by extracting square roots. When a solution is irrational, list both the exact solution and its approximate solution.
Answer to Problem 40E
The exact roots are
Explanation of Solution
Given information:
The equation is
Calculation:
Take square root on both sides,
Subtract 9 from both sides.
Take positive sign.
Take negative sign.
The exact roots are
The roots are irrational.
So, the approximate roots are,
And,
So, approximate roots are,
Chapter A Solutions
EBK PRECALCULUS W/LIMITS
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning