Math Problem Statement

Simplify the expression ½ln(x+2)² = ½[ln|x| - ln(x² + 3x - 2)] into a single logarithm.

Solution

It appears that I couldn't extract the text successfully from the image due to its quality or format. Let me manually interpret the mathematical expression based on the image.

From what I can see, the equation is:

12ln(x+2)2=12[lnxln(x2+3x2)]\frac{1}{2} \ln(x + 2)^{2} = \frac{1}{2} \left[ \ln|x| - \ln(x^{2} + 3x - 2) \right]

The goal is to simplify this equation into a single logarithmic expression.

Step-by-Step Solution:

  1. Simplify both sides: First, we notice that both sides of the equation have 12\frac{1}{2}. So, we can cancel 12\frac{1}{2} from both sides.

    ln(x+2)2=lnxln(x2+3x2)\ln(x + 2)^{2} = \ln|x| - \ln(x^{2} + 3x - 2)

  2. Use logarithmic properties: Apply the logarithmic rule ln(ab)=bln(a)\ln(a^{b}) = b \ln(a) on the left-hand side.

    2ln(x+2)=lnxln(x2+3x2)2 \ln(x + 2) = \ln|x| - \ln(x^{2} + 3x - 2)

  3. Combine logarithms: Use the property of logarithms ln(a)ln(b)=ln(ab)\ln(a) - \ln(b) = \ln\left(\frac{a}{b}\right) on the right-hand side.

    2ln(x+2)=ln(xx2+3x2)2 \ln(x + 2) = \ln\left(\frac{|x|}{x^{2} + 3x - 2}\right)

  4. Exponentiate both sides: Now, exponentiate both sides to get rid of the natural logarithm.

    e2ln(x+2)=eln(xx2+3x2)e^{2 \ln(x + 2)} = e^{\ln\left(\frac{|x|}{x^{2} + 3x - 2}\right)}

    Simplify:

    (x+2)2=xx2+3x2(x + 2)^{2} = \frac{|x|}{x^{2} + 3x - 2}

Thus, the expression is simplified to:

(x+2)2=xx2+3x2(x + 2)^{2} = \frac{|x|}{x^{2} + 3x - 2}

Let me know if you would like more details on any part or have questions!

Related Questions:

  1. What are the basic logarithmic properties?
  2. How do you solve logarithmic equations with different bases?
  3. What are the common logarithmic simplifications?
  4. What happens if xx is negative in a logarithmic equation?
  5. How does exponentiation work to remove logarithms?

Tip:

Always remember to check the domain of logarithmic expressions—especially when dealing with ln(x)\ln(x)—as logarithms are only defined for positive values of xx.

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Math Problem Analysis

Mathematical Concepts

Logarithms
Algebraic Simplification

Formulas

Logarithmic properties: ln(a^b) = b ln(a)
Logarithm subtraction: ln(a) - ln(b) = ln(a/b)

Theorems

Properties of logarithms

Suitable Grade Level

Grades 11-12