Table of contents

0. Review of Algebra4h 18m
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 22m
10. Combinatorics & Probability1h 45m

0. Review of Algebra

Exponents

College Algebra

0. Review of Algebra

Exponents

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1:26 minutes

Problem 65

Textbook Question

In Exercises 59–70, evaluate each exponential expression. (-1)^4

Verified step by step guidance

Identify the base and the exponent in the expression \((-1)^4\). Here, the base is \(-1\) and the exponent is \(4\).

Understand that the exponent \(4\) indicates how many times the base \(-1\) is multiplied by itself.

Calculate \((-1) \times (-1)\) to get \(1\), since multiplying two negative numbers results in a positive number.

Multiply the result \(1\) by \((-1)\) again to get \(-1\).

Finally, multiply \(-1\) by \((-1)\) to get \(1\), completing the evaluation of \((-1)^4\).

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Exponential Expressions

Exponential expressions involve a base raised to a power, where the base is multiplied by itself as many times as indicated by the exponent. For example, in the expression a^n, 'a' is the base and 'n' is the exponent. Understanding how to evaluate these expressions is crucial, especially when dealing with positive and negative bases.

Properties of Exponents

The properties of exponents are rules that simplify the process of working with exponential expressions. Key properties include the product of powers, power of a power, and the power of a product. For instance, any non-zero number raised to an even exponent results in a positive value, which is essential for evaluating expressions like (-1)^4.

Even and Odd Exponents

The distinction between even and odd exponents is important in evaluating expressions. An even exponent means the base is multiplied by itself an even number of times, resulting in a positive outcome, while an odd exponent results in the base's sign being preserved. This concept is particularly relevant when evaluating negative bases, such as (-1) raised to any power.