Questions: Write the equation in its equivalent exponential form. Then solve for x.
log2(x-5) = 3
Transcript text: Write the equation in its equivalent exponential form. Then solve for x .
\[
\log _{2}(x-5)=3
\]
Solution
Solution Steps
To convert the logarithmic equation to its equivalent exponential form, we use the property that \(\log_b(a) = c\) is equivalent to \(b^c = a\). Then, solve for \(x\) by isolating it on one side of the equation.
Solution Approach
Convert the logarithmic equation \(\log_{2}(x-5) = 3\) to its exponential form.
Solve the resulting exponential equation for \(x\).
Step 1: Convert to Exponential Form
Starting with the logarithmic equation:
\[
\log_{2}(x - 5) = 3
\]
we convert it to its equivalent exponential form:
\[
2^3 = x - 5
\]
Step 2: Simplify the Exponential Equation
Calculating \(2^3\) gives us:
\[
8 = x - 5
\]
Step 3: Solve for \(x\)
To isolate \(x\), we add \(5\) to both sides:
\[
x = 8 + 5
\]
which simplifies to:
\[
x = 13
\]