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02-11-2016
Mathematics

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

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Аноним Аноним

02-11-2016

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

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