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
Linear Equations
4:31 minutes
Problem 54
Textbook Question
Textbook QuestionSolve each equation. See Examples 4–6. √x-√(x-12)=2
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Square Roots
Square roots are mathematical operations that find a number which, when multiplied by itself, gives the original number. In the context of the equation, understanding how to manipulate square roots is essential for isolating variables and solving for x. For example, √x represents a value that, when squared, equals x.
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Isolating Variables
Isolating variables is a fundamental algebraic technique used to solve equations. This involves rearranging the equation to get the variable of interest on one side, allowing for easier computation. In the given equation, isolating the square root terms will help simplify the problem and lead to a solution for x.
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Equations with Two Variables
Squaring Both Sides
Squaring both sides of an equation is a method used to eliminate square roots, making it easier to solve for the variable. When both sides of an equation are squared, it is crucial to remember that this can introduce extraneous solutions, so checking the final answers against the original equation is necessary to ensure validity.
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