/*! 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 48 Rewrite each of the following as... [FREE SOLUTION] | 91Ó°ÊÓ

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Rewrite each of the following as an equivalent expression with rational exponents. $$\sqrt{x^{5}}$$

Short Answer

Expert verified
The expression \sqrt{x^{5}} is equivalent to \ x^{5/2}.

Step by step solution

01

Identify the Radical

Recognize the given expression involves a square root: \ \ \ \( \sqrt{x^{5}} \)
02

Understand the Relationship

Know that a square root can be expressed as an exponent of \ \ \( 1/2 \) : \ \ \ \( \sqrt{a} = a^{1/2} \)
03

Rewrite Using the Exponent Rule

Apply the exponent rule to rewrite the expression with a rational exponent: \ \ \ \( \sqrt{x^{5}} = x^{5 \cdot 1/2} \)
04

Simplify the Expression

Perform the multiplication to simplify the exponent: \ \ \ \( x^{5 \cdot 1/2} = x^{5/2} \)
05

Final Expression

Confirm the final expression with rational exponents: \ \ \( x^{5/2} \)

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Key Concepts

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

square root
The square root is a very common mathematical operation. It is the opposite of squaring a number (raising it to the power of 2). When you take the square root of a number, you're finding a value that, when multiplied by itself, gives the original number. For example, the square root of 9 is 3 because 3×3=9.

The symbol for the square root is √. For instance, √16=4. If you encounter an expression like √x^5, it involves both a variable and its exponent under the root. Converting the square root to an exponent helps simplify the expression and make further calculations easier.
exponent rules
Exponents are used to denote repeated multiplication. For example, 2^3 means 2 is multiplied by itself 3 times, resulting in 8. Here are some basic exponent rules you should know:

  • Product Rule: a^m * a^n = a^(m+n)
  • Quotient Rule: a^m / a^n = a^(m-n)
  • Power Rule: (a^m)^n = a^(m*n)

In the given problem, we use the rule that a square root can be expressed as an exponent of 1/2. That means √a = a^(1/2). Hence, √x^5 can be written as (x^5)^(1/2). According to the power rule, multiply the exponents: 5*(1/2) = 5/2. So, √x^5 = x^(5/2).
simplifying expressions
Simplifying expressions means writing them in their simplest form. This often makes them easier to work with and understand. Here's how to simplify √x^5 step by step:

1. **Identify the Radical:** Recognize that the expression involves a square root: √x^5.
2. **Convert the Radical to an Exponent:** Knowing that √a = a^(1/2), we rewrite √x^5 as (x^5)^(1/2).
3. **Apply the Exponent Rule:** Use the power rule (a^m)^n = a^(m*n) to simplify (x^5)^(1/2) to x^(5*1/2).
4. **Perform the Multiplication:** Multiply the exponents: 5*(1/2)=5/2. So, we have x^(5/2).
5. **Result:** The simplified expression is x^(5/2).

By breaking down each step, even complex expressions can be simplified easily.

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