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

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asked Sep 16, 2017 154k views

1 Answer

Rami Loiferman · Answer 1 · 2017-09-21T01:30:27+0000

log(4x+2)-2log(3)=1
log(4x+2)-log 3²=1 (b*logva x=logva x^b)
log(4x+2)-log 9=1 (logva b- logva c=logva (b/c))
log (4x+2)/9=1 ⇔10¹=(4x+2)/9
(4x+2)/9=10
4x+2=90
4x=90-2
4x=88
x=88/4
x=22

Answer: x=22

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

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