Math  /  Algebra

QuestionSolve Problems 26-33 for x exactly without using a calculator.
26. log(x+5)=log(2x3)\log (x+5)=\log (2 x-3)
27. 2ln(x1)=ln(x25)2 \ln (x-1)=\ln \left(x^{2}-5\right)
28. 9x1=31+x9^{x-1}=3^{1+x}
29. e2x=ex23e^{2 x}=e^{x^{2}-3}
30. 2x2ex=3xex2 x^{2} e^{x}=3 x e^{x}
31. log1β9=x\log _{1 \beta} 9=x
32. logx8=3\log _{x} 8=-3
33. log9x=32\log _{9} x=\frac{3}{2}

Studdy Solution
Problem 33: Solve log9x=32\log_9 x = \frac{3}{2}.
Rewrite in exponential form:
93/2=x 9^{3/2} = x
Calculate x x :
x=(32)3/2 x = (3^2)^{3/2} x=33 x = 3^3 x=27 x = 27
The solutions are:
26. x=8 x = 8
27. x=3 x = 3
28. x=3 x = 3
29. x=3 x = 3 or x=1 x = -1
30. x=0 x = 0 or x=32 x = \frac{3}{2}
31. x=log9log(1/β) x = \frac{\log 9}{\log (1/\beta)}
32. x=12 x = \frac{1}{2}
33. x=27 x = 27

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