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Solve for the exact value of 
x.

log_(4)(9x)+log_(4)(9)=3
Answer:

Solve for the exact value of x x .\newlinelog4(9x)+log4(9)=3 \log _{4}(9 x)+\log _{4}(9)=3 \newlineAnswer:

Full solution

Q. Solve for the exact value of x x .\newlinelog4(9x)+log4(9)=3 \log _{4}(9 x)+\log _{4}(9)=3 \newlineAnswer:
  1. Apply product rule: Apply the product rule of logarithms to combine the logarithmic terms.\newlineThe product rule of logarithms states that logb(m)+logb(n)=logb(mn)\log_b(m) + \log_b(n) = \log_b(m*n) for the same base bb.\newlineSo, log4(9x)+log4(9)\log_4(9x) + \log_4(9) becomes log4(9x×9)\log_4(9x \times 9).
  2. Simplify expression: Simplify the expression inside the logarithm.\newlineMultiplying 9x9x by 99 gives us 81x81x.\newlineSo, log4(9x×9)\log_4(9x \times 9) becomes log4(81x)\log_4(81x).
  3. Set equation equal: Set the logarithmic equation equal to 33. We now have log4(81x)=3\log_4(81x) = 3.
  4. Convert to exponential form: Convert the logarithmic equation to its exponential form.\newlineThe exponential form of log4(81x)=3\log_4(81x) = 3 is 43=81x4^3 = 81x.
  5. Calculate value: Calculate 434^3. 434^3 equals 6464. So, the equation becomes 64=81x64 = 81x.
  6. Solve for x: Solve for x.\newlineDivide both sides of the equation by 8181 to isolate xx.\newlinex=6481x = \frac{64}{81}.
  7. Simplify fraction: Simplify the fraction if possible. 6464 and 8181 have no common factors other than 11, so the fraction is already in its simplest form. x=6481x = \frac{64}{81}.

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