Math Problem Statement

Use the laws of logarithms to expand and simplify the expression ln(x(x + 4)(x + 8)). Also, solve the equation log3(x) = 2 using the laws of logarithms.

Solution

Question 1:

Expression: ln(x(x+4)(x+8))\ln(x(x+4)(x+8))

Using the laws of logarithms:

  1. Expand the natural log: ln(x(x+4)(x+8))=ln(x)+ln(x+4)+ln(x+8)\ln(x(x+4)(x+8)) = \ln(x) + \ln(x+4) + \ln(x+8)

This is the simplified expanded form.


Question 2:

Equation: log3(x)=2\log_3(x) = 2

Using the definition of logarithms: x=32=9x = 3^2 = 9

Thus, x=9x = 9.


Would you like a detailed step-by-step breakdown of either solution? Here are 5 related questions to expand your understanding:

  1. How can you use the logarithmic laws to condense an expression?
  2. What are the steps to solve logarithmic equations like logb(x)=y\log_b(x) = y?
  3. How do logarithms relate to exponential functions?
  4. How can you apply the change of base formula for logarithms?
  5. What are the common properties of natural logarithms?

Tip: Always verify the domain of logarithmic functions to ensure arguments are positive!

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Math Problem Analysis

Mathematical Concepts

Logarithms
Natural Logarithms
Exponential Equations

Formulas

ln(ab) = ln(a) + ln(b)
Definition of logarithms: log_b(x) = y ↔ b^y = x

Theorems

Properties of Logarithms
Laws of Exponents

Suitable Grade Level

Grades 9-12