In each of the following, find all real numbers x that satisfy the given equation. If none satisfy the equation, then state the answer as "None." a. 5* = 25 d. ³√x=2³√7 A. b. 25=3125 X = 2 e. x = 3 3x 9 (216) 25 f. (x + 1)² = 3 C. a. Select the correct answer below and, if necessary, fill in the answer box to complete your choice. O A. x= (Simplify your answer. Type exact answers, using radicals as needed. Use a comma to separate answers as needed.) B. None b. Select the correct answer below and, if necessary, fill in the answer box to complete your choice. 243 3125 (Simplify your answer. Type exact answers, using radicals as needed. Use a comma to separate answers as needed.) O B. None c. Select the correct answer below and, if necessary, fill in the answer box to complete your choice. OA. x= (Simplify your answer. Type exact answers, using radicals as needed. Use a comma to separate answers as needed.) B. None

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
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Section4.2: Adding And Subtracting Polynomials
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### Finding Real Numbers that Satisfy the Given Equations

Below are several equations. For each, determine all real numbers \( x \) that satisfy the equation. If none satisfy the equation, select "None." 

### Equations:

a. \( 5^x = 25 \)

b. \( 25^{-x} = 3125 \)

c. \( \left( \frac{9}{25} \right)^{-3x} = \frac{243}{3125} \)

d. \( \sqrt[3]{\frac{x}{7}} = 2\sqrt[3]{7} \)

e. \( x^{-\frac{2}{5}} = 3 \)

f. \( (x + 1)^2 = 3 \)

---

### Answer Sections:

#### a. Select the correct answer below and, if necessary, fill in the answer box to complete your choice.

- ☐ A. \( x = \) [__________]
  
  (Simplify your answer. Type exact answers, using radicals as needed. Use a comma to separate answers as needed.)
  
- ☐ B. None

#### b. Select the correct answer below and, if necessary, fill in the answer box to complete your choice.

- ☑ A. \( x = \) [__________]


  (Simplify your answer. Type exact answers, using radicals as needed. Use a comma to separate answers as needed.)
  
- ☐ B. None

#### c. Select the correct answer below and, if necessary, fill in the answer box to complete your choice.

- ☐ A. \( x = \) [__________]
  
  (Simplify your answer. Type exact answers, using radicals as needed. Use a comma to separate answers as needed.)
  
- ☐ B. None 

---

In each case, carefully calculate the value(s) of \( x \) or determine if no real values of \( x \) will satisfy the equation. Remember to consider the properties of exponents and roots when simplifying your answers.
Transcribed Image Text:### Finding Real Numbers that Satisfy the Given Equations Below are several equations. For each, determine all real numbers \( x \) that satisfy the equation. If none satisfy the equation, select "None." ### Equations: a. \( 5^x = 25 \) b. \( 25^{-x} = 3125 \) c. \( \left( \frac{9}{25} \right)^{-3x} = \frac{243}{3125} \) d. \( \sqrt[3]{\frac{x}{7}} = 2\sqrt[3]{7} \) e. \( x^{-\frac{2}{5}} = 3 \) f. \( (x + 1)^2 = 3 \) --- ### Answer Sections: #### a. Select the correct answer below and, if necessary, fill in the answer box to complete your choice. - ☐ A. \( x = \) [__________] (Simplify your answer. Type exact answers, using radicals as needed. Use a comma to separate answers as needed.) - ☐ B. None #### b. Select the correct answer below and, if necessary, fill in the answer box to complete your choice. - ☑ A. \( x = \) [__________] (Simplify your answer. Type exact answers, using radicals as needed. Use a comma to separate answers as needed.) - ☐ B. None #### c. Select the correct answer below and, if necessary, fill in the answer box to complete your choice. - ☐ A. \( x = \) [__________] (Simplify your answer. Type exact answers, using radicals as needed. Use a comma to separate answers as needed.) - ☐ B. None --- In each case, carefully calculate the value(s) of \( x \) or determine if no real values of \( x \) will satisfy the equation. Remember to consider the properties of exponents and roots when simplifying your answers.
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