Table of contents
- 0. Review of College Algebra4h 43m
- 1. Measuring Angles39m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
0. Review of College Algebra
Rationalizing Denominators
2:55 minutes
Problem 107
Textbook Question
Textbook QuestionMultiply. See Example 7. (√2 + 1) (√3 + 1)
Verified Solution
This video solution was recommended by our tutors as helpful for the problem above
Video duration:
2mPlay a video:
Was this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Multiplication of Binomials
Multiplying binomials involves applying the distributive property, often referred to as the FOIL method (First, Outside, Inside, Last). This technique helps in systematically multiplying each term in the first binomial by each term in the second binomial, ensuring that all combinations are accounted for. For example, in (a + b)(c + d), you would calculate ac, ad, bc, and bd.
Recommended video:
3:42
Rationalizing Denominators Using Conjugates
Square Roots
Square roots are values that, when multiplied by themselves, yield the original number. In the context of the expression (√2 + 1)(√3 + 1), understanding how to manipulate square roots is essential. For instance, √2 and √3 are irrational numbers, and their properties can affect the simplification of the expression when combined with integers.
Recommended video:
2:20
Imaginary Roots with the Square Root Property
Simplifying Radical Expressions
Simplifying radical expressions involves reducing the expression to its simplest form, which may include combining like terms or rationalizing denominators. In the case of the product (√2 + 1)(√3 + 1), after multiplication, you may encounter terms that can be simplified further, such as combining square roots or simplifying coefficients to achieve a cleaner expression.
Recommended video:
6:36
Simplifying Trig Expressions
Watch next
Master Rationalizing Denominators with a bite sized video explanation from Patrick Ford
Start learningRelated Videos
Related Practice