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
2:03 minutes
Problem 33b
Textbook Question
Textbook QuestionIf the expression is in exponential form, write it in radical form and evaluate if possible. If it is in radical form, write it in exponential form. Assume all variables represent posi-tive real numbers. -3 √5p³
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Exponential Form
Exponential form expresses numbers using a base raised to a power, such as a^b, where 'a' is the base and 'b' is the exponent. This notation is useful for simplifying calculations, especially with roots and powers. For example, the expression 5^(1/2) represents the square root of 5, indicating that the exponent is a fraction.
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Radical Form
Radical form represents numbers using roots, such as √a or n√a, where 'n' indicates the degree of the root. This form is particularly useful for expressing non-integer exponents and can be converted to exponential form. For instance, the expression √5 can be rewritten as 5^(1/2), demonstrating the relationship between radicals and exponents.
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Positive Real Numbers
Positive real numbers are all the numbers greater than zero, including integers, fractions, and irrational numbers. In algebra, assuming variables represent positive real numbers ensures that operations involving roots and exponents yield real results, avoiding issues with undefined expressions. This assumption is crucial when evaluating expressions like -3√5p³, as it affects the validity of the results.
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