Chapter 2: Problem 77
Simplify the expression using one of the power rules. $$\left(-5^{3}\right)^{2}$$
Short Answer
Expert verified
The simplified expression using the power rule is \(-5^{6}\).
Step by step solution
01
Identify the given expression and power rule to be used
We are given \(\left(-5^{3}\right)^{2}\) and we need to use the power of a power rule, which is \((a^m)^n = a^{m \cdot n}\).
02
Apply the power rule
Using the power rule, we can rewrite our expression as follows:
\[\left(-5^{3}\right)^{2} = (-5)^{3 \cdot 2}\]
03
Simplify by multiplying the exponents
Now, multiply the exponents:
\[-5^{3 \cdot 2} = -5^{6}\]
04
Final simplified expression
The simplified expression is:
\[-5^{6}\]
Unlock Step-by-Step Solutions & Ace Your Exams!
-
Full Textbook Solutions
Get detailed explanations and key concepts
-
Unlimited Al creation
Al flashcards, explanations, exams and more...
-
Ads-free access
To over 500 millions flashcards
-
Money-back guarantee
We refund you if you fail your exam.
Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!
Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Exponents
Exponents are a fundamental concept in algebra. They represent the repeated multiplication of a number by itself. For example, in the expression \(-5^3\), the base is \(-5\) and the exponent is \(3\). This means that \(-5\) is multiplied by itself three times: \((-5) \times (-5) \times (-5)\).
Exponents are a shorthand way to express large numbers. Instead of writing out repeated multiplication, they allow us to write a compressed version, making complex calculations more manageable.
Here are a few key points to understand about exponents:
Exponents are a shorthand way to express large numbers. Instead of writing out repeated multiplication, they allow us to write a compressed version, making complex calculations more manageable.
Here are a few key points to understand about exponents:
- **Base**: The number that is being multiplied. In our example, \(-5\) is the base.
- **Exponent**: The small number positioned above and to the right of the base. It tells how many times the base is used as a factor. Here, \(3\) is the exponent.
Power of a Power Rule
The Power of a Power Rule is a specific rule in exponents that helps simplify expressions where an exponent is raised to another exponent. For example, if we have the expression \((a^m)^n\), the rule states that we can multiply the exponents: \(a^{m \cdot n}\). This is very useful for simplifying complex expressions with multiple exponents.
In our exercise, we have \((-5^3)^2\). Using the Power of a Power Rule, we multiply the exponent \(3\) by \(2\) to get \((-5)^{6}\).
Here are the steps to applying the Power of a Power Rule:
In our exercise, we have \((-5^3)^2\). Using the Power of a Power Rule, we multiply the exponent \(3\) by \(2\) to get \((-5)^{6}\).
Here are the steps to applying the Power of a Power Rule:
- Identify the expression and the exponents.
- Multiply the exponents together instead of calculating each power separately.
- Rewrite the expression using the new exponent value. For example, \((a^3)^2 = a^{6}\).
Simplifying Expressions
Simplifying expressions is a primary goal when dealing with algebraic operations. By simplifying, we can express a mathematical idea in its most concise form, making it easier to understand or solve.
In the context of exponents, simplifying often involves applying rules such as the Power of a Power Rule, which we just explored. In our problem, we used this rule to transform \((-5^3)^2\) into \((-5)^{6}\). This is the simplified version of the expression.
Here are some general steps for simplifying expressions that contain exponents:
In the context of exponents, simplifying often involves applying rules such as the Power of a Power Rule, which we just explored. In our problem, we used this rule to transform \((-5^3)^2\) into \((-5)^{6}\). This is the simplified version of the expression.
Here are some general steps for simplifying expressions that contain exponents:
- Use exponent rules, like the Power of a Product Rule or Power of a Power Rule, to combine and reduce terms.
- Rewrite complex terms using fewer symbols or simpler numbers, when possible.
- Check your work to ensure that no steps violate any mathematical principles.