/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 33 Simplify each exponential expres... [FREE SOLUTION] | 91影视

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Simplify each exponential expression. $$\left(x^{-5}\right)^{3}$$

Short Answer

Expert verified
The simplified form of the given exponential expression \((x^{-5})^{3}\) is \(x^{-15}\).

Step by step solution

01

Identify the exponent properties

When you have an exponent raise to another exponent, you can simply multiply the exponents. In this case, the base is \(x\) and the exponents are \(-5\) and \(3\). So, the formula to apply here is \((a^{n})^{m}=a^{n*m}\). Here \(a=x\), \(n=-5\) and \(m=3\).
02

Apply the exponent rules

Substitute the values of \(a\), \(n\) and \(m\) into the formula. This gives: \((x^{-5})^{3}=x^{-5*3}\).
03

Calculate

Multiply the exponents -5 and 3 to get a new exponent: \(x^{-5*3}= x^{-15}\).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Exponent Rules
Exponent rules are like the magic tricks of mathematics. They help us handle and transform expressions with powers or exponents easily. Let's break down some basic exponent rules that are quite handy for simplifying expressions:
  • Product of Powers: When multiplying like bases, add the exponents: \(a^m \times a^n = a^{m+n}\).
  • Quotient of Powers: When dividing like bases, subtract the exponents: \(\frac{a^m}{a^n} = a^{m-n}\), assuming \(a eq 0\).
  • Power of a Power: When raising a power to another power, multiply the exponents: \((a^m)^n = a^{m\times n}\).
  • Power of a Product: Apply the exponent to both factors inside the parenthesis: \((ab)^n = a^n b^n\).
  • Power of a Quotient: Apply the exponent to both the numerator and denominator: \(\left(\frac{a}{b}\right)^n = \frac{a^n}{b^n}\), given \(b eq 0\).
Understanding these rules is essential as they facilitate the simplification of even the most complex exponential expressions.
Simplifying Expressions
Simplifying expressions involves using various mathematical rules intelligently to reduce them into their simplest form. When working with expressions that have exponents, the goal is to make them as easy to understand and work with as possible.
To simplify an expression like \((x^{-5})^3\), apply the power of a power rule, which requires you to multiply the exponents. This means that you focus on the numbers in the exponents themselves, even if they are negative. By identifying number patterns and arithmetic operations, the elements of the expression can be reduced.
The simplification process for an expression step-by-step is as follows:
  • Identify the base and the exponents. In our exercise, \(x\) is the base, and the exponents are \(-5\) and \(3\).
  • Use the appropriate exponent rule鈥攈ere, the power of a power rule鈥攖o combine the exponents by multiplying them. This results in \(x^{-5\times3} = x^{-15}\).
  • Once simplified, the expression is easier to interpret and use in further calculations.
Simplification often allows us to compare, solve, or graph more cleanly without unnecessary complexity.
Negative Exponents
Negative exponents can be a bit confusing at first, but they are quite logical once you understand them. A negative exponent refers to the reciprocal of the base raised to the corresponding positive exponent. Essentially, it inverts the base.
For any non-zero number \(a\), an expression like \(a^{-n}\) is equivalent to \(\frac{1}{a^n}\). This is because negative exponents "flip" the fraction. Here鈥檚 how you can understand it better:
  • Inversion Principle: If you have an expression like \(a^{-1}\), it equals \(\frac{1}{a}\).
  • For \(a^{-n}\), it similarly becomes \(\frac{1}{a^n}\); this makes the calculation straightforward once the negative exponent is dealt with.
  • When simplifying, make sure to turn those negative exponents positive by finding the reciprocal.
For example, a term like \(x^{-15}\) can be rewritten as \(\frac{1}{x^{15}}\). This transformation is crucial, especially when you need to prepare expressions for arithmetic operations or graphing. Negative exponents are part of what makes the rules of exponents powerful tools for simplification and solving."}]}]}褜褞褌懈褉芯胁邪褌褜 褌邪泄屑泻芯写 懈谐褉褘 胁芯 胁褋褌邪胁泻邪褏 褌芯谢褜泻芯 胁 Latex. 孝械锌械褉褜 胁褋械 斜褍写械褌 小褍锌械褉.

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Most popular questions from this chapter

In more U.S. marriages, spouses have different faiths. The bar graph shows the percentage of households with an interfaith marriage in 1988 and \(2012 .\) Also shown is the percentage of households in which a person of faith is married to someone with no religion. The formula $$ I=\frac{1}{4} x+26 $$ models the percentage of U.S. households with an interfaith marriage, \(I, x\) years after \(1988 .\) The formula $$ N=\frac{1}{4} x+6 $$ models the percentage of U.S households in which a person of faith is married to someone with no religion, \(N, x\) years after \(1988 .\) Use these models to solve Exercises \(107-108\). The formula for converting Celsius temperature, \(C,\) to Fahrenheit temperature, \(F\), is $$ F=\frac{9}{5} C+32 $$ If Fahrenheit temperature ranges from \(41^{\circ}\) to \(50^{\circ},\) inclusive, what is the range for Celsius temperature? Use interval notation to express this range.

Use the strategy for solving word problems, modeling the verbal conditions of the problem with a linear inequality. On two examinations, you have grades of 86 and \(88 .\) There is an optional final examination, which counts as one grade. You decide to take the final in order to get a course grade of A, meaning a final average of at least 90 . a. What must you get on the final to earn an A in the course? b. By taking the final, if you do poorly, you might risk the B that you have in the course based on the first two exam grades. If your final average is less than \(80,\) you will lose your \(\mathrm{B}\) in the course. Describe the grades on the final that will cause this to happen.

Perform the indicated operations. Simplify the result, if possible. $$\left(\frac{2 x+3}{x+1} \cdot \frac{x^{2}+4 x-5}{2 x^{2}+x-3}\right)-\frac{2}{x+2}$$

Will help you prepare for the material covered in the first section of the next chapter. If \(y=4-x^{2},\) find the value of \(y\) that corresponds to values of \(x\) for each integer starting with -3 and ending with 3

Exercises \(142-144\) will help you prepare for the material covered in the next section. Simplify and express the answer in descending powers of \(x\) : $$ 2 x\left(x^{2}+4 x+5\right)+3\left(x^{2}+4 x+5\right) $$

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