What is the true solution to the logarithmic equation below?

log Subscript 2 Baseline (6 x) minus log Subscript 2 Baseline (StartRoot x EndRoot) = 2
x = 0
x = two-ninths
x = four-ninths
x = two-thirds

Respuesta :

Answer:

C. 4/9

Step-by-step explanation:

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The true solution of [tex]\log_2(6x) - \log_2(\sqrt x) = 2[/tex] is x = 4/9

How to determine the solution?

The equation is given as:

[tex]\log_2(6x) - \log_2(\sqrt x) = 2[/tex]

Apply the quotient rule of logarithm

[tex]\log_2(6x/\sqrt x) = 2[/tex]

Rewrite the equation as an exponential equation

[tex]6x/\sqrt x = 2^2[/tex]

Evaluate the square

[tex]6x/\sqrt x = 4[/tex]

Square both sides

[tex]36x^2/x = 16[/tex]

Multiply through by x

[tex]36x^2 = 16x[/tex]

Divide by x

[tex]36x = 16[/tex]

Divide by 36

x = 4/9

Hence, the true solution of [tex]\log_2(6x) - \log_2(\sqrt x) = 2[/tex] is x = 4/9

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