Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
1. Equations & Inequalities
Rational Equations
1:47 minutes
Problem 80
Textbook Question
Textbook QuestionSolve each equation. 2/x+2 + 1/x+4 = 4/x²+6x+8
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Rational Expressions
Rational expressions are fractions where the numerator and the denominator are polynomials. Understanding how to manipulate these expressions, including finding a common denominator and simplifying, is crucial for solving equations involving them. In the given equation, the terms involve rational expressions that need to be combined and simplified to find the solution.
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Rationalizing Denominators
Finding a Common Denominator
To solve equations involving rational expressions, it is often necessary to find a common denominator. This allows for the combination of fractions into a single expression, making it easier to solve for the variable. In the provided equation, identifying the least common denominator will help eliminate the fractions and simplify the equation.
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Rationalizing Denominators
Factoring Polynomials
Factoring polynomials is the process of breaking down a polynomial into simpler components, or factors, that can be multiplied together to obtain the original polynomial. This concept is essential when simplifying expressions or solving equations, as it can reveal solutions or make the equation easier to work with. In the context of the given equation, factoring may be necessary to simplify the denominator and solve for x.
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