Math Problem Statement

3log54+3log18-3log13

Solution

We can solve this expression step by step using the properties of logarithms.

Given: 3log54+3log5183log5133 \log_5 4 + 3 \log_5 18 - 3 \log_5 13

Step 1: Factor out the 3

Since the factor of 3 is common across all terms, we can factor it out: 3(log54+log518log513)3(\log_5 4 + \log_5 18 - \log_5 13)

Step 2: Use logarithm properties

Now, let's apply the properties of logarithms. Specifically, we'll use:

  • The addition property: logbA+logbB=logb(A×B)\log_b A + \log_b B = \log_b (A \times B)
  • The subtraction property: logbAlogbB=logb(AB)\log_b A - \log_b B = \log_b \left(\frac{A}{B}\right)

First, apply the addition property to log54+log518\log_5 4 + \log_5 18: log5(4×18)=log572\log_5 (4 \times 18) = \log_5 72

Next, apply the subtraction property to log572log513\log_5 72 - \log_5 13: log5(7213)\log_5 \left(\frac{72}{13}\right)

Step 3: Simplify

Now, the expression simplifies to: 3log5(7213)3 \log_5 \left(\frac{72}{13}\right)

This is the simplified form of the original expression. If you need the numerical value, we can proceed further with that as well.

Would you like to explore any further details or numerical evaluation?


Here are 5 related questions to explore:

  1. How do you expand logarithmic expressions with multiplication and division?
  2. What are the basic properties of logarithms?
  3. How do you evaluate logarithms without a calculator?
  4. What are common logarithm bases (e.g., base 10, base e)?
  5. How does the change of base formula work in logarithms?

Tip: Always check if terms can be factored out to simplify complex logarithmic expressions before expanding or simplifying.

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Math Problem Analysis

Mathematical Concepts

Logarithms
Logarithmic Properties
Algebra

Formulas

log_b A + log_b B = log_b (A * B)
log_b A - log_b B = log_b (A / B)

Theorems

Properties of Logarithms

Suitable Grade Level

Grades 9-12