eva511 eva511
  • 30-04-2019
  • Mathematics
contestada

How to solve for x/ extraneous solutions

How to solve for x extraneous solutions class=

Respuesta :

gmany
gmany gmany
  • 01-05-2019

Answer:

x = 8

Step-by-step explanation:

[tex]\log_ab=c\iff a^c=b\\\\===================\\\\Domain:\ 8x>0\to x>0\\\\\log_4(8x)=3\iff4^3=8x\\\\8x=64\qquad\text{divide both sides by 8}\\\\x=8\in D[/tex]

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