5. Solve the equation x4 = 32.

Algebra and Trigonometry (6th Edition)
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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
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Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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**Solve the equation \( x^{\frac{5}{4}} = 32 \)**

To solve the equation \( x^{\frac{5}{4}} = 32 \), follow these steps:

1. **Isolate the variable:** 
   In this case, the variable \( x \) is already isolated. 

2. **Eliminate the fractional exponent:** 
   Raise both sides of the equation to the reciprocal of \( \frac{5}{4} \). The reciprocal of \( \frac{5}{4} \) is \( \frac{4}{5} \).
   \( (x^{\frac{5}{4}})^{\frac{4}{5}} = 32^{\frac{4}{5}} \)

3. **Simplify the left side:** 
   The left side simplifies to \( x \).
   \( x = 32^{\frac{4}{5}} \)

4. **Evaluate the right side:** 
   To find \( 32^{\frac{4}{5}} \), start by expressing 32 as a power of 2.
   \( 32 = 2^5 \)
   Substitute into the equation:
   \( 32^{\frac{4}{5}} = (2^5)^{\frac{4}{5}} \)
   Use the property of exponents:
   \( (2^5)^{\frac{4}{5}} = 2^{5 \cdot \frac{4}{5}} \)
   Simplify the exponent:
   \( 2^{5 \cdot \frac{4}{5}} = 2^4 \)
   Calculate:
   \( 2^4 = 16 \)

Therefore, the solution to the equation \( x^{\frac{5}{4}} = 32 \) is \( x = 16 \).

---

Use this approach and steps to solve similar fractional exponent equations. Make sure you are comfortable with exponent rules and fractional exponents to solve these types of problems correctly.
Transcribed Image Text:**Solve the equation \( x^{\frac{5}{4}} = 32 \)** To solve the equation \( x^{\frac{5}{4}} = 32 \), follow these steps: 1. **Isolate the variable:** In this case, the variable \( x \) is already isolated. 2. **Eliminate the fractional exponent:** Raise both sides of the equation to the reciprocal of \( \frac{5}{4} \). The reciprocal of \( \frac{5}{4} \) is \( \frac{4}{5} \). \( (x^{\frac{5}{4}})^{\frac{4}{5}} = 32^{\frac{4}{5}} \) 3. **Simplify the left side:** The left side simplifies to \( x \). \( x = 32^{\frac{4}{5}} \) 4. **Evaluate the right side:** To find \( 32^{\frac{4}{5}} \), start by expressing 32 as a power of 2. \( 32 = 2^5 \) Substitute into the equation: \( 32^{\frac{4}{5}} = (2^5)^{\frac{4}{5}} \) Use the property of exponents: \( (2^5)^{\frac{4}{5}} = 2^{5 \cdot \frac{4}{5}} \) Simplify the exponent: \( 2^{5 \cdot \frac{4}{5}} = 2^4 \) Calculate: \( 2^4 = 16 \) Therefore, the solution to the equation \( x^{\frac{5}{4}} = 32 \) is \( x = 16 \). --- Use this approach and steps to solve similar fractional exponent equations. Make sure you are comfortable with exponent rules and fractional exponents to solve these types of problems correctly.
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