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Ch. R - Review of Basic Concepts
Lial - College Algebra 13th Edition
Lial13th EditionCollege AlgebraISBN: 9780136881063Not the one you use?Change textbook
Chapter 1, Problem 83

Evaluate each expression. (-2)4

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1
Identify the base and the exponent in the expression \((-2)^4\). Here, the base is \(-2\) and the exponent is \(4\).
Recall that an exponent indicates how many times to multiply the base by itself. So, \((-2)^4\) means \((-2) \times (-2) \times (-2) \times (-2)\).
Multiply the base step-by-step: first multiply the first two factors, then multiply the result by the next factor, and so on.
Remember that multiplying two negative numbers results in a positive number, so keep track of the signs carefully during multiplication.
Continue multiplying until all four factors are multiplied together to find the final value of \((-2)^4\).

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Key Concepts

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

Exponents and Powers

An exponent indicates how many times a base number is multiplied by itself. For example, in (-2)^4, the base is -2 and the exponent 4 means multiplying -2 by itself four times.
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Negative Base with Even Exponent

When a negative number is raised to an even exponent, the result is positive because multiplying an even number of negative factors results in a positive product.
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Order of Operations and Parentheses

Parentheses indicate that the negative sign is part of the base. Thus, (-2)^4 means the entire -2 is raised to the fourth power, unlike -2^4, which would mean the negative of 2 raised to the fourth power.
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