Verified Answer :

\(4log_{12} 2 + log_{12} x = log_{12} 96 \\ log _{12} 2^{4} +log _{12} x = log _{12} 96 \\ log _{12} 16x = log_{12} 96\)
16 x = 96
x = 96 : 16 = 6
Answer : D ) x = 6 ( x = 7 is the wrong answer )

Answer:

Value of x is 6.

Step-by-step explanation:

Using logarithmic rules:

  • \(\log_b mn = \log_b m+ \log_b n\)
  • \(\log_b x^n = n \log_b\)
  • if \(\log_b x = \log_b y\) then x = y

Solve:  \(4 \log_{12} 2+\log_{12} x = \log_{12} 96\)

Apply the logarithmic rules:

\(\log_{12} 2^4+\log_{12} x = \log_{12} 96\)

\(\log_{12} 16+\log_{12} x = \log_{12} 96\)

then;

\(\log_{12} 16x = \log_{12} 96\)

Again apply the same rules:

16x = 96

Divide both sides by 6 we get;

x = 6

therefore, the value of x is 6