Question

log base10 (x + 2) + log base10 (x - 2) = log base10 3 + 3 log base10 4​

Answer 1

Answer:

14

Step-by-step explanation:

Log₁₀(x+2)+log10₁₀-2) = log₁₀3+3log104  

⇒{х+2>0  , {х-2>0 ⇒ х>2

Log10(x+2)*(х-2) = log103+log104³  

 Log10(x²-4)= log10(3*4³)  

x^2-4=192

x^2=196

х=14 или х=-14 –не походит -14<2

Ответ 14