Solve for x

Dear Student , 

log(x+2)+log(x-2)=log3+3log4
log[(x+2)(x-2)]=log3+log4^3
log(x^2-4)=log(3*4^3)
x^2-4=192
x^2=192+4
x^2=196
x= 14

Regards

  • 39
Log a +log b= log (a*b) Hence log (x²-4)=log(3*64) Hence x=14
  • 9
X = 14
  • -11
X=14
  • -3
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