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
0. Review of Algebra
Radical Expressions
2:25 minutes
Problem 46a
Textbook Question
In Exercises 45–66, divide and, if possible, simplify. ___ √200 √10
Verified step by step guidance
1
<insert step 1: Start by expressing both the numerator and the denominator in terms of their prime factors.>
<insert step 2: The square root of 200 can be expressed as \( \sqrt{200} = \sqrt{2^3 \times 5^2} \).>
<insert step 3: The square root of 10 can be expressed as \( \sqrt{10} = \sqrt{2 \times 5} \).>
<insert step 4: Divide the expressions: \( \frac{\sqrt{200}}{\sqrt{10}} = \sqrt{\frac{2^3 \times 5^2}{2 \times 5}} \).>
<insert step 5: Simplify the expression by canceling out common factors in the numerator and the denominator.>
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Radical Expressions
Radical expressions involve roots, such as square roots, cube roots, etc. In this context, we are dealing with square roots, which represent the value that, when multiplied by itself, gives the original number. Understanding how to manipulate these expressions is crucial for simplifying and dividing them effectively.
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Simplifying Radicals
Simplifying radicals involves reducing the expression to its simplest form. This often includes factoring out perfect squares from under the radical sign. For example, √200 can be simplified by recognizing that 200 = 100 × 2, allowing us to express √200 as 10√2.
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Division of Radicals
Dividing radical expressions requires applying the properties of radicals, particularly the quotient rule, which states that √a / √b = √(a/b). This means we can simplify the division of two square roots by combining them under a single radical, provided that the denominator is not zero.
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