Math Problem Statement

Solve: log₆(2x - 8) = 2

Solution

The equation provided is:

log6(2x8)=2\log_6(2x - 8) = 2

To solve this logarithmic equation, follow these steps:

Step 1: Rewrite the logarithmic equation in exponential form

The general property of logarithms states that:

logb(y)=xis equivalent tobx=y\log_b(y) = x \quad \text{is equivalent to} \quad b^x = y

For the equation log6(2x8)=2\log_6(2x - 8) = 2, this means:

62=2x86^2 = 2x - 8

Step 2: Simplify the exponential equation

Since 62=366^2 = 36, the equation becomes:

36=2x836 = 2x - 8

Step 3: Solve for xx

Add 8 to both sides:

36+8=2x36 + 8 = 2x

44=2x44 = 2x

Now, divide both sides by 2:

x=442=22x = \frac{44}{2} = 22

Final Solution:

x=22x = 22

Would you like any more details or have any questions?

Related Questions:

  1. How do you verify the solution to a logarithmic equation?
  2. What are the steps for solving logarithmic equations with different bases?
  3. How does changing the base in a logarithmic equation affect the solution process?
  4. How do you solve logarithmic equations with multiple logarithms?
  5. What are common mistakes to avoid when solving logarithmic equations?

Tip:

Always remember to check if the argument of the logarithm is positive in the original equation, as logarithms are undefined for non-positive arguments.

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Math Problem Analysis

Mathematical Concepts

Logarithms
Exponential Equations
Algebra

Formulas

log₆(y) = x is equivalent to 6^x = y

Theorems

Logarithmic to Exponential Conversion Theorem

Suitable Grade Level

Grades 9-12