Matthews Cox
05/06/2023 · Junior High School
3) \( (0,2)^{3 x+3}=25 \)
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Tutor-Verified Answer
Step-by-step Solution
To solve the equation \( (0,2)^{3x+3} = 25 \), we first need to clarify the base of the exponent. It seems there might be a typographical error, as \( (0,2) \) is not a valid base for exponentiation.
Assuming you meant \( 2^{3x+3} = 25 \), we can proceed with the solution.
1. Rewrite the equation:
\[
2^{3x+3} = 25
\]
2. Take the logarithm of both sides. We can use the natural logarithm (ln) or logarithm base 10 (log). Here, we will use the natural logarithm:
\[
\ln(2^{3x+3}) = \ln(25)
\]
3. Apply the power rule of logarithms:
\[
(3x + 3) \ln(2) = \ln(25)
\]
4. Solve for \( 3x + 3 \):
\[
3x + 3 = \frac{\ln(25)}{\ln(2)}
\]
5. Isolate \( 3x \):
\[
3x = \frac{\ln(25)}{\ln(2)} - 3
\]
6. Finally, divide by 3 to solve for \( x \):
\[
x = \frac{1}{3} \left( \frac{\ln(25)}{\ln(2)} - 3 \right)
\]
Now, we can compute the numerical value of \( x \):
- Calculate \( \ln(25) \) and \( \ln(2) \):
\[
\ln(25) \approx 3.21888, \quad \ln(2) \approx 0.69315
\]
- Substitute these values into the equation:
\[
x \approx \frac{1}{3} \left( \frac{3.21888}{0.69315} - 3 \right)
\]
- Calculate \( \frac{3.21888}{0.69315} \):
\[
\frac{3.21888}{0.69315} \approx 4.645
\]
- Now substitute back:
\[
x \approx \frac{1}{3} (4.645 - 3) \approx \frac{1}{3} (1.645) \approx 0.5483
\]
Thus, the solution to the equation \( 2^{3x+3} = 25 \) is approximately:
\[
\boxed{0.5483}
\]
Quick Answer
The solution to the equation \( 2^{3x+3} = 25 \) is approximately \( x = 0.5483 \).
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