Math Problem Statement

If log₂(4x + 6) = 2, then x = ___

Solution

To solve the equation log2(4x+6)=2\log_2(4x + 6) = 2, we will proceed as follows:

Step 1: Rewrite the logarithmic equation in exponential form

The general property of logarithms is: logb(a)=c    bc=a\log_b(a) = c \implies b^c = a Here: log2(4x+6)=2    22=4x+6\log_2(4x + 6) = 2 \implies 2^2 = 4x + 6

Step 2: Simplify the exponential expression

22=4    4=4x+62^2 = 4 \implies 4 = 4x + 6

Step 3: Solve for xx

4=4x+64 = 4x + 6 Subtract 6 from both sides: 46=4x4 - 6 = 4x 2=4x-2 = 4x Divide both sides by 4: x=12x = -\frac{1}{2}

Final Answer:

x=12x = -\frac{1}{2}

Would you like additional explanations or details on logarithmic properties? Here are related questions for further exploration:

  1. What are the properties of logarithms, such as product, quotient, and power rules?
  2. How do you verify solutions of logarithmic equations?
  3. What is the difference between natural logarithms (ln\ln) and logarithms with other bases?
  4. Can a logarithmic equation have no solution? Why or why not?
  5. How does the base of a logarithm affect the growth of the function?

Tip: Always check the domain of the logarithmic function. For logb(x)\log_b(x), xx must be positive (x>0x > 0).

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Math Problem Analysis

Mathematical Concepts

Logarithms
Exponential Equations
Basic Algebra

Formulas

log_b(a) = c ⇔ b^c = a

Theorems

Logarithmic-Exponential Relationship

Suitable Grade Level

Grades 9-11