Question

log 3(4x+2)-log3(x+2)=1

Answer 1

Răspuns:

log₃(4x+2)-log₃(x+2)=1

DVA

4x+2>0

4x>-2

x> -2/4

x>-1/2

x+2>0

x> -2=>

x> -1/2

log₃(4x+2)/(x+2)=1

(4x+2)/(x+2)=3¹

4x+2=3(x+2)

4x+2-3x-6-0

x-4=0   x=4

Explicație pas cu pas: