If log_5(25) + log_5(5) = x, what is the value of x?

Practice Questions

Q1
If log_5(25) + log_5(5) = x, what is the value of x?
  1. 1
  2. 2
  3. 3
  4. 4

Questions & Step-by-Step Solutions

If log_5(25) + log_5(5) = x, what is the value of x?
  • Step 1: Identify the logarithm log_5(25).
  • Step 2: Recognize that 25 is 5 raised to the power of 2 (5^2).
  • Step 3: Use the property of logarithms that states log_b(b^a) = a. Therefore, log_5(25) = 2.
  • Step 4: Identify the logarithm log_5(5).
  • Step 5: Recognize that 5 is 5 raised to the power of 1 (5^1).
  • Step 6: Use the same property of logarithms. Therefore, log_5(5) = 1.
  • Step 7: Add the results from Step 3 and Step 6: 2 + 1.
  • Step 8: Calculate the sum: 2 + 1 = 3.
  • Step 9: Conclude that x = 3.
  • Logarithmic Properties – Understanding the properties of logarithms, specifically that log_b(b^a) = a and log_b(b) = 1.
  • Base Conversion – Recognizing that 25 can be expressed as 5^2, which simplifies the logarithmic calculation.
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