Question

log 3 степени(5+2х)=1

Answer 1

log₃ (5+2x)=1
log₃ (5+2x)=log₃ 3

{5+2x>0
{5+2x=3

5+2x>0
2x>-5
x>-2.5

5+2x=3
2x=3-5
2x=-2
x=-1 >-2.5
Ответ: -1.